Here is an article posted on Kung Fu Tea : http://chinesemartialstudies.com/2016/03/28/lives-of-chinese-martial-artists-16-yu-chenghui-realizing-swordsmanship-in-an-era-of-restoration/
Here’s some more
Here’s our JUL+AUG 2012 cover story on Yu Chenghui and his development of shuangshoujian.
Here is our web obituary: Grandmaster Yu Chenghui 1939–2015. We ran a completely different obituary in print in our NOV+DEC 2015 issue.
Thanks for posting, Gene. I didn’t realize there was a production 2 handed Chinese longsword available for purchase. That is a must have for me as it is my favorite weapon of choice. Will be ordering one of those from MAM as soon as I can.
Thank you for giving me a chance to plug our sponsor…
…that’s really the ‘official’ reason why I’m here. 
The two-handed jian I posted above is our middle weight one. Personally, I think it’s got the best balance for practice. MartialArtsMart.com also carries a lighter spring steel one (although that is out of stock at the moment) and a rather heavy one. There are a few more two-handers, like the Spring Autumn Pearwood jian and the Damascus jian, but those aren’t really for regular practice. 