Deputy Envoy Yanle was negotiating with Sifangguan on business. Wang Kunwu was recording outside the house, and everyone came out from every corner to eavesdrop.During the meeting, the two sides were at loggerheads with each other. Kang Yunhai, deputy envoy of Yanle, proposed that the price could be negotiated but the transaction location should be in an oasis.Yuan Mo, A Shu, and An Xiuyi held Kang Yunhai back in a chess game, while Wang Kunwu and Yu Chihua investigated Yan Le's true intentions for the ownership of this oasis.
After some investigation, everyone discovered that the oasis had become extremely important due to the diversion of the Bru River. Controlling the water source was equivalent to controlling the lifeblood of the Silk Road.Director Bai revealed the truth and solved Yanle's conspiracy.
Yuan Mo defeated Kang Yunhai in the chess game by relying on the chess records left by his father, won Kang Yunhai's respect, and learned the truth about his parents' death from Kang Yunhai.Yuan Mo's victory gave him more respect in Sifangguan, but he still pursued the murderer who caused his parents' death.