Living by the Nu and Lancang rivers, Nu is one of the ancient native ethnic minorities in Nujiang in the northwest of Yunnan. 

They like liquor a lot and have numerous ways for drinking, among which the Tong Xin Jiu (heart-to-heart liquor) is most famous. For the Tong Xin Jiu, two people share the same bowl of liquor at the same time in such a way: cheek to cheek, mouth next to mouth, arms on each other’s shoulder, and finish the drink in one go. Only finish the Tong Xin Jiu, can you be deemed a true friend of the Nus.