The Legend of Zu Season 2 Episode 16

Xiao Yue goes to Zu to help. Sect leaders go to Zu to discuss plans to defeat Luo Xian Sect and find the other magical butterflies. They decide to have a contest to determine who will be the master of the gold butterfly. Someone overhears that Yu Ying Qi is missing an outfit and suspects that he is Huoli people. Before the contest everyone is given a drink that has a poison for Huoli people. When Yu Ying Qi fights against Yu Ying Nan, the poison takes effect and Yu Ying Nan wins. Bai Gu Yi goes to save Yu Ying Qi. Just as Yu Ying Qi is almost exposed, they find a Huoli person. The chef is on fire and commits suicide. (Source: jindreame at kisskh)