Sanfeng is the third sister of the four sisters mountain (Siguniang), one of the four sisters and is 5355 meters high. It is sometimes considered a side peak of Yaomei. There is established trips to the summit of Sanfeng and easy to organize a trip there.
It usually takes 4-5 days for this mountain from Chengdu, plus 2 days acclimating days a week long trip is good.