恒昌，没有你的家，再也没有往日的温馨；没有你的家，是那么令人凄凉和伤感。曾经的过往，流逝的光阴，和你那总是温和的微笑，只能化作永久的思念。短短的几日，让我陷入了无限的悲痛和漫长的回忆中。我和恒昌的相知，相识算是缘分吧！他研究生毕业后来到我父母所在的研究所工作，他的室主任来为我们做媒，当时因为我还在上大学和我们年龄的差距，我们两人都没同意见面。阴差阳错，后来，我哥住进了他的研究生宿舍。记得那是一个周五下午，我放学去找我哥一起回家，却在我哥那儿遇见到了他。我们见面后互相都对对方有好感，就这样慢慢的交往起来。我的实习医院在木樨地，他住三里河，我们都距玉渊谭公园很近。每当我们有时间或周末就会到那里漫步。走在玉渊谭，钓鱼台国宾馆的林荫小路上，他给我讲述着文学，天文，历史和音乐。他的记忆力超人，红楼梦里上百名人物的名字和他们之间的关系他都记的一清二楚；还有历史人物，历史年代以及中外著名的作词家，作曲家的名字，国籍，和他们的音乐作品他都记的清清楚楚。慢慢的我了解到他在77年高考恢复后，他是在他们大安县第一个拿到高考成绩并被中国科技大学第一批录取的77级学生。他还告诉我他们班有好几个当地的高考状元，听后令我对他和他们班的同学肃然起敬。在大学期间，他不但学习成绩一直很优异，学习从不熬夜，而且他还有业余时间去读杂书。大学4年，他读完了中科大图书馆的所以文学书籍。他的英俊的相貌，他的聪慧，他的才气和为人都在深深的吸引着我，我大学一毕业就和他走上了婚姻的殿堂。

91年9月儿子满月那天，恒昌作为中英友好奖学金公派访问学者踏上了来Edinburgh的旅程。1年后他拿到了NERC英国自然基金会的奖学金，93年3月我来到了他的身边。从此开始了我们新的生活。恒昌做人低调，为人正直，待人诚恳，与世无争的性格得到他的同学，同事和朋友们的认可和欣赏。他对工作总是兢兢业业，他的聪明才智体现在他读博期间就在他专业杂志上发表了三篇文章，这些文章并曾多次被他的专业文献引用，一直到近几年。他的聪明才智还体现在他在工作后参与EAP项目的研究，他研发的二维/三维空间图像的软件应用于石油勘探中，这个软件被无数石油公司采那，那些年他穿梭在石油公司间，替石油公司安装软件，并为公司培训员工。我们相濡以沫三十载。他是个贴心的丈夫，脾气非常好，从不发火。我们的生活虽平平淡淡，但很温馨，和谐。他既是一个慈父，他对儿子从未大声教训过，但他对儿子有求必应。他又是一个孝子，他对他的母亲我的婆婆的爱自始至终。对于我们自家的事他放手让我做主，但只有一件事他要说了算，就是他要为他母亲做的事，我必须无条件服从。我们对未来充满希望，在他生病前，我们还计划回北京一定要再去玉渊潭，钓鱼台国宾馆的林荫小路上漫步，回忆往事。憧憬着等我60岁后，每个周末坐上大巴将美丽的苏格兰游遍。

2020年初，历经四个月的体检，恒昌被确诊为肺癌晚期。我们美梦般的计划被这无情的消息打破。在他生病的一年半里，他对待疾病坚强乐观，积极配合治疗。自始至终顽强与病魔抗衡。面对生死从容淡定，从不沮丧，从未抱怨。在每次得知他的治疗产生耐药，肿瘤在继续发展的时候，我都会流泪，但每次都是他在鼓励我要坚强。我是多么的希望，在我生病的时候，恒昌，你能在我的身边继续鼓励我。恒昌，我亲爱的丈夫，你带着对老母亲的眷恋，对妻子的依依不舍，对儿子的亲情和牵挂，对亲朋好友同学的深切留恋，离开了我们。我相信你还没有走远，相信你还可以感知与你朝夕相伴的爱妻，以及你深深爱戴的儿子，还有关心你的亲朋好友和同学。希望你在天堂里，再没有病痛的折磨，一路走好！

你的爱妻：周英

Funeral eulogy on the 15th of July 2021: 

"I thank you all today for coming to celebrate with me my father’s life and sadly to mourn his passing, who, judging by the fullness of this auditorium and the numbers watching online, was someone who was well loved and respected.

Words alone are do not suffice to express what kind of person he was to so many: a tenacious and talented student who belied his humble origins, a faithful husband, a devoted father, a dedicated colleague, a friend who loved intellectual debate, an approachable supervisor, an remarkably resilient patient. The one thing that all these have in common is his ability to inspire us all.

My dad was a role model to myself and many others. He was the epitome of diligence, humility and patience, a man of principle, of quiet confidence and someone you could trust to be there when you needed it most. He instilled in me from a young age much of my moral compass and integrity, and encouraged in my growth and education, which he valued above all else. He had an insatiable thirst for knowledge and he sought out books when there were none. My mother and I often used him as a walking encyclopaedia. He was a man of many opinions and whilst he and I did not often share the same opinions, one could always have an intelligent, forthcoming and honest discussion with him. He had an uncanny ability to make you pause and think.

As a father, he was both stern yet kind. He did not impose himself upon me, though certain unspoken expectations were clear. He was soft spoken and gentle, never once raising his voice towards me. If he was unhappy with my tendency to put play over study, he would tell me off in a quiet but firm manner. We used to joke, if mum yelled at me, I rolled my eyes, but if dad told me off, I went quiet and listened. I think that is a testament to how naturally he commanded gentle respect. He was often a man of few words, but he showed love through deeds instead. When I was house hunting, he daily looked on the web for properties for me to view. I remember him traveling by train to Glasgow to deliver me my laptop charger when I once left it at home and we had a lovely walk afterwards. I did over 100 hours of driving practice, with him at my side and he showed great patience and voiced nary a single complaint. I don't think, looking back I appreciated enough the lengths he went for me.

My father was a lover of the gentler genres of music, often commenting that pop and electronica were too loud and made his head hurt. He preferred instead, music that invoked nostalgia and emotion, and this is reflected in the 3 pieces he personally chose for today’s ceremony: “Take me home country roads”, “500 miles from home” and sixiangqu, quite literally, the song of homesickness. As I recall with great melancholy, my fondest memory of dad was of him, sitting at a table, absorbed in one of his books, listening to such nostalgic music. He would ask me “do you feel it? The kind of feeling you get when you’re sitting in a train, looking out the window, as you returned home?” Edinburgh was always his second home. His first and most cherished home, was the home which his mother and the rest of his family resided, reflecting on how much he loved his family and how he longed to be with them. You may ask, why is such a melancholic memory, my fondest memory of him? It’s because my most cherished home, has my dad imprinted in it just like in that memory, giving me the feeling of safety, stability and tranquillity. This image of home was always an anchor for me, even as I moved afar, as I went from school to university to working as a doctor, he was my rock, weathering the waves of time and change, and perched atop that rock, a lighthouse beacon shone, beckoning me back home should I stray too far.

When I was a little boy, some 25 years ago, he had just joined the Edinburgh Anisotropy Project proper, after publishing highly cited papers in his PhD. He went on to pioneer ground breaking software that is still used across the globe today and garnered the EAP many accolades. When he passed away, 25 years later, he was still with them. He forever stayed true to his principles, his work, his habits, hobbies, immaculate lifestyle, love of music and of books, a reflection of his steadfast and reliable personality and for me, the same source of comfort many years ago as it was up his passing.

I wish I spent more time with him, absorbing his qualities and knowledge. Its only when someone who is such a constant in your life, who you take for granted, its only when they are gone, that you realise how much you miss them. Alas my rock has crumbled, the lighthouse beacon extinguished. I am incredibly sad, yet seeing everyone here today and knowing many more watch online, I take solace in knowing that it wasn’t just my life he touched in such a positive way. We all will remember him. I am so proud of how he guided me, how he inspired me. I wish someday, I can be someone who is looked up to as much as him, and to inspire as much as him did.

He will forever and always be in my heart, and I know in the hearts and minds of all that knew and loved him. Dad, I hope that you are on that train you’ve reminisced so often about, listening to the music that you’ve always loved, staring nostalgically out that window on the way to heaven’s gates, I bid you a safe journey and to finally rest in peace, from a grateful son to a gentle, loving father."

Eulogy done by Hengchang's only and treasured son, Zhoudi 

我们心目中的最亲爱，最优秀的弟弟恒昌: 15-07-21

你出生时我们姐俩都还小。只记得那天晚上的月亮，又大又圆。我俩从外面回家，到家门口的时候，三娘高兴地对我们说，你们又有了一个小弟弟。你是咱家唯一的男孩儿，我全家都非常的喜爱你。你小时候总对新鲜的东西很感兴趣。有一天大姐和妈出门，你见我们回来就跑了过来，我们发现这个小男孩儿怎么一下子变丑了呢? 那时候你自己刚刚学会用剪刀，你把你自己的头发给剪得参差不齐，我们进屋后又发现你把被子也剪了个小口。你从小就酷爱看书，你总是说，妈给我念念，姐给我念念。文革期间，书的来源特别少，大姐偶尔借到一本书。你就在大姐不看的空闲时间，抓紧时间快速阅读。从那时起，你就培养了快速阅读的能力。你上中学后，利用各种途径阅读了大量的小说，四大名著，甚至政治读物，毛选等。

因为你聪慧，又酷爱读书，在77年恢复高考那年，以大安县第一名的好成绩，考入了中国科技大学。四年后，又以第一名的好成绩，考试取了国家地震局地球物理研究所陈颙导师的研究生。91年你又获取了中英友好奖学金，离别祖国，同时也离开了妈妈，姐姐和在国内的亲人们，到了异国他乡。你的才华、你的学识被熟悉你的人所赞赏。家里也为你骄傲和自豪。你走后，每次回国回家看妈时，妈都非常高兴，见到你时的眼神是那么的亲切放光，临走时又是那么地恋恋不舍。

2019年底你们一家仨口计划回北京陪伴双方老人过春节。可临近春节你打来电话说：大姐我今年春节不能回北京了。因为医生怀疑我是肺癌，要对我做进一步检查。当时我的心一揪，心想不可能，我还以侥幸心理想你可能是被诊断错了吧！从你有病我们就每周六通话。这一年多每周六就是我最盼望的时刻。6月26日周六下午，通过视频大姐看到你和周英身影，我又高兴又难过。我高兴看到你们，我难过你的病容。7月3日周六晚上周英发来你们仨口你在病榻上的合影。看到躺在病床上的你，我心想，你看上去不像一个重病号，还能挺住再坚持一年半载的。周日周英没来信息，我心里就嘀咕：周英怎么没来电话呀，周一傍晚恶耗传来：我们唯一的，可亲可爱的，优秀的弟弟就这样远离我们而去。每次你们一家走后，我们总是期盼着下一次的相聚。我们想你，想再看到你的音容笑貌，想你回来时给妈带来的喜悦，可这样的日子不会再有了，我们从此天各一方。小昌，你早早的离开了我们，你让我们悲痛欲绝，你让我们伤心泪流。小昌我们这辈子做姐弟还没做够，下辈子有缘我们还做姐弟。亲爱的弟弟，愿你在天堂没有痛苦，保佑咱妈身体，请你放心！我们一定照顾好咱妈，小昌永别了，一路走好！

永远爱你的姐姐，姐夫及全家

Hengchang was a humble and quiet man whose greatest joy was to read and learn. He grew up as the son of a railway worker, and moved from place to place. Despite this, he was naturally gifted at school, especially with mathematics. As a unassuming youngster with no background, he quickly got the attention of his teachers for his intelligence and hard working nature. Many of his teachers were moved and keen to help the quick learning student, supplying him with materials, and books. He quickly aced every single exam that he did, with the exception of English, eventually getting first place in his local county for China's infamously gruelling university entrance examinations and managed to get himself into what at the time was China's top university, studying geophysics. 

In the chaos of the Chinese Cultural Revolution, books were scarce, he had limited access to books as a child but developed a fascination with them, initially reading books that his sisters left behind and then going out of his way to find books to read. He read broadly and voraciously, and finished every book in his university library, despite at the same time maintaining a position consistently near the top of his class. This love of written literature permeated throughout his life, be it history, fantasy, politics, scientific, Wuxia novels or many more. He also enjoyed classic movies, and classical and folk music. 

Throughout his life, he showed great tolerance, and humility to everyone he came across. His temperament, taking after his own father, was always calm and collected. His diligence and approachability was noted by all who knew and worked with him. He was reliable and steadfastly resolute man, attracting many friends and colleagues within and out with his work. He remained with BGS for 30 years, content with his lot in life and did not seek out further promotions. He valued education above all else and instead he preferred to mentor students and involve himself in editorials and reviewing scientific literature. He was always well received as a mentor and teacher to the numerous PhD students, who I am sure will remember him fondly.

Hengchang was a senior research geophysicist at the British Geological Survey. After graduating with a BSc in geophysics, and obtaining an MSc at the Institute of Geophysics in Beijing. He remained as a research fellow there until 1991, before moving to the UK and obtaining a PhD at the University of Edinburgh. His life’s work was for the ground-breaking Edinburgh Anisotropy Project (EAP), which he stayed with for the remainder of his professional life till his passing. 

His expertise was in mathematics and he brought his skills to novel geophysical techniques for fracture mapping and converted-wave research. Hengchang pioneered many innovations in seismology and published highly cited landmark papers. Of note he championed the use of parallel computing and developing ground-breaking software for processing seismic data in the presence of anisotropy, which is still used by multiple sponsors around the globe to this day. In particular, Hengchang developed the powerful CXtools software package, which allows the processing of 2D/3D multi-component seismic data. CXtools, and Hengchang’s other innovations, lead to vastly improved seismic profile images. His technical ability and judgement fundamentally underpinned the success of EAP over the years, which went from strength to strength, getting many awards and accolades including the coveted Society of Exploration Geophysicists Distinguished Achievement award in 2012.

The professional community lost a gifted geophysicist and invaluable colleague who will always be remembered.