Yan was a young man living in Mungu early in the 5th age.
Yanweijin is a member of clan Wei, although his relation to his family is unknown.
After Kari and her father Valdemar were killed, Yan joined a party of adventurers against his father Khangweizhin's newly discovered plans. He eventually attempted to steal the 6 Demon bag for himself in a nihilistic effort to avenge his beloved Kari. He was killed in the process.
When the warlord Quarion Winterhand was released from the bag, Yan was one of the corpses reanimated to hold the party at bay. He was destroyed a final time by the party before the city was drowned in the ocean.