The couple worked together, trading and bartering with the Chinese Ho and Shan who brought goods from Yunnan, Sipsongpanna, and the British Shan States.... The Shan and Ho came in horse or bullock caravans in the cool season.... Chiang and Saeng also transported goods like kerosene, salt, matches, candles, and pickles from Chiang Mai to sell to villagers who came to Sankamphaeng