Farmers pick tea leaves at a tea garden in Baisha Li Autonomous County in south China's Hainan Province, Feb. 7, 2021. The tea garden started spring tea picking recently. (Xinhua/Zhou Jiayi)

Farmers pick tea leaves at a tea garden in Baisha Li Autonomous County in south China's Hainan Province, Feb. 7, 2021. The tea garden started spring tea picking recently. (Xinhua/Zhou Jiayi)

A farmer picks tea leaves at a tea garden in Baisha Li Autonomous County in south China's Hainan Province, Feb. 7, 2021. The tea garden started spring tea picking recently. (Xinhua/Yang Guanyu)

A farmer picks tea leaves at a tea garden in Baisha Li Autonomous County in south China's Hainan Province, Feb. 7, 2021. The tea garden started spring tea picking recently. (Xinhua/Zhou Jiayi)

Aerial photo taken on Feb. 7, 2021 shows famers picking tea leaves at a tea garden in Baisha Li Autonomous County in south China's Hainan Province. The tea garden started spring tea picking recently. (Xinhua/Yang Guanyu)

Farmers pick tea leaves at a tea garden in Baisha Li Autonomous County in south China's Hainan Province, Feb. 7, 2021. The tea garden started spring tea picking recently. (Xinhua/Yang Guanyu)

Aerial photo taken on Feb. 7, 2021 shows famers picking tea leaves at a tea garden in Baisha Li Autonomous County in south China's Hainan Province. The tea garden started spring tea picking recently. (Xinhua/Yang Guanyu)

Aerial photo taken on Feb. 7, 2021 shows famers picking tea leaves at a tea garden in Baisha Li Autonomous County in south China's Hainan Province. The tea garden started spring tea picking recently. (Xinhua/Yang Guanyu)