Posterior and superior to the mastoid process, on the line connecting Tianchong GB-9， Fubai GB-10 and Wangu GB-12.
How to locate
First locate Tianchong GB-9 and Wangu GB-12, which are the reference points for locating Fubai GB-10 and Touqiaoyin GB-11.
GB-9 is 1.5 cun above the ear apex (Shuaigu GB-8) and 0.5 cun in a posterior direction. GB-12 is in a depression posterior and inferior to the mastoid process.
GB-11 is at the junction of the middle and the lower third, where often a small ‘dip’ can be felt on the bone.