Glad that this place is getting noticed. I was there in the winter of 2009/2010 but I didn't bring my trad gear...
Here is my facebook photo album of Tiger Leaping Gorge, the town of Liming and the sandstone cliffs.
I'm publishing a trip report on my blog tomorrow. I'll include this thread in the blog article.
Btw, I don't know whether this is the first sandstone crack climbing in China, but it's definitely not the first one in Asia. I'm from Taiwan, this place called Long Dong (Dragon Cave) is a sandstone sea-cliff place and there are 500+ routes there both trad and sport.
a blog article about Long Dong,
and a photo album here: