The supply of melons exceeds the demand and the only option is to expand planting. Lao Huang encouraged Xingfu Village to plant red-heart crisp melons together.At this time, Lao Wang, the person in charge of the northern international import trade, approached Wu Mingzhu and wanted to license the patent for melons to promote their cultivation in poor rural areas in the north. When the contract was signed, Miao Xiaohe suddenly remembered that the Lao Wang in front of him was the Canton Fair.They met the assistants of the Japanese businessmen, who had evil intentions and hurriedly stopped Wu Mingzhu from signing the contract. When Wu Mingzhu learned the truth, he became furious and tore up the contract.Lao Wang returned to the office at night and wanted to steal the planting technology of red-heart crisp melons, but was caught by Yang Qiyou. Lao Wang kidnapped Wu Mingzhu when he escaped.