Villagers harvest watermelons in Shuangxing Community in Qianxi County of Bijie City, southwest China's Guizhou Province, June 24, 2019. (Xinhua/Hu Panxue)

Villagers harvest leek in Yongping Village in Qianxi County of Bijie City, southwest China's Guizhou Province, June 24, 2019. (Xinhua/Shi Kaixin)

A villager harvests watermelons in Shuangxing Community in Qianxi County of Bijie City, southwest China's Guizhou Province, June 24, 2019. (Xinhua/Han Xianpu)

Villagers harvest watermelons in Shuangxing Community in Qianxi County of Bijie City, southwest China's Guizhou Province, June 24, 2019. (Xinhua/Ou Xiudeng)

Villagers harvest leek in Yongping Village in Qianxi County of Bijie City, southwest China's Guizhou Province, June 24, 2019. (Xinhua/Ou Xiudeng)

A villager harvests watermelons in Shuangxing Community in Qianxi County of Bijie City, southwest China's Guizhou Province, June 24, 2019. (Xinhua/Shi Kaixin)

A villager harvests tomatoes in Tiankan Community in Qianxi County of Bijie City, southwest China's Guizhou Province, June 24, 2019. (Xinhua/Zhou Xunchao)

Aerial photo taken on June 24, 2019 shows villagers harvesting leek in Yongping Village in Qianxi County of Bijie City, southwest China's Guizhou Province. (Xinhua/Hu Panxue)