After a depressing round of consideration, I believe the following people are turning up. AND THE BBQ IS ON 18TH MAY, SUNDAY.

Kaiyin
Guoyong
Chengwei
Zijian
Dihua
Song Guang
Ruoci
Zhixiong
Cheangzheng
Geok Khoon
Ruiliang

Therefore, ZhiXiong shall NOT buy drinks. Each shall bring $12.

-yours depressingly
chengwei