Crayfish in Weitang Village hit the market all at once, and buyers suppressed prices to harm farmers. Returning Shen Yan predicted that a cold wave was coming and crayfish prices would skyrocket. Enduring the doubts of all the villagers, he organized everyone to rush to catch crayfish and keep them alive with cold chains, leading all the village farmers to avoid the price-gouging trap, seize the latest market trends, and ultimately safeguard the farming profits of the folks.