Trekking, biking, climbing, ice climbing, mountaineering etc. This outdoor company, founded by local Lion Xu and Scot Lee Mclaughlin will set up/guide trips for you in Sichuan, based on your detailed requirements.
Recent events in the north of the province mean those areas are out of bounds for leisure, but contact them for recommendations for other areas.
Lee Mclaughlin has left the company, and I am unsure if the company is still operational.