I have climbed in Yunnan twice - April 1998 and April/May 2002.
Jade Dragon / Yulongxueshan was climbed back in the 1980s, by Eric Perlman, I believe, on his second attempt. It was not climbed in the 1960s as some literature says. I know of at least a few climbers who have failed on it in recent years, including myself (see AAJ 1999). But I am pretty sure that someone would have illegally climbed it as well in recent years. It's not overly hard and the access is pretty good, for such an impressive mountain. There has been a lot of unauthorised climbing activity in this part of the world, especially in Sichuan.
I went up the Yulong cable car this year - how bizarre ! 4506m and Chinese tourists sucking small cans of oxygen bought at the base.
MM do not really guide Gongga Shan, they just advertise that they can, as they (Charlie Fowler and friends really) recced it a few years ago. Gongga is a long way from KawaKarpo, so they are not really in the same area, and there are some high 6700+m peaks right next to Gongga.
KawaKarpo / Meilixueshan 6740m is off-limits for spiritual reasons. I tested this policy this year, though for the mountain next to it, and the villagers will be punished by the monks if they let foreigners go above the villages without guides. Climbing is forbidden. A number of foreigners have visited this area now. In 98 you could not even cross the river to visit it, now they run tours over there and have a cheap lodge near the view point for the Minyong Glacier. Getting relatively touristy.
I have twice climbed a small 4780m snow peak close by the road at the high pass north of Zhongdian, about 90 minutes south of Deqen. The main mountain here is Baimang Shan 5500m, and it is almost certainly unclimbed. A good pic of it that I took appeared in High magazine in May 2000, I think (or 2001 ?). We attempted it this year but turned back due to avo danger/debris at 4am and at 11am a massive avo ripped down the whole face, wiping our route. There are lots of smaller peaks in Yunnan that would make good exploratory climbing, often not far from roads.
Haba is another interesting area, with an easy main peak at 5490m, but some very sharp lower peaks that are mostly unclimbed. They are on the north side of Tiger Leaping Gorge - now a very popular trek. This year we went to an area north of there and got great views of all the high peaks between Yulongxueshan and Haba. There are a lot of nice little mountains in there.
I've told you too much already !