 In 1779, the "Somdet Chao Phraya" went on his campaigns against Vientiane and took a daughter of King Suriyavong of Vientiane as his concubine – Kamwaen.Kam Waen became "Somdet Chao Phraya"’s favorite much to the dismay of Nak.One day, she beat Kam Waen with a wooden stick and Kam Waen ran for the "Somdet Chao Phraya".