Artificially-bred red-crowned cranes are seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, Jan. 10, 2019. Zhalong nature reserve serves as the habitat of over 190 types of rare birds like red-crowned cranes. (Xinhua/Wang Jianwei)

　　Artificially-bred red-crowned cranes are seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, Jan. 10, 2019. Zhalong nature reserve serves as the habitat of over 190 types of rare birds like red-crowned cranes. (Xinhua/Wang Jianwei)

　　An artificially-bred red-crowned crane is seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, Jan. 10, 2019. Zhalong nature reserve serves as the habitat of over 190 types of rare birds like red-crowned cranes. (Xinhua/Wang Jianwei)

　　Artificially-bred red-crowned cranes are seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, Jan. 10, 2019. Zhalong nature reserve serves as the habitat of over 190 types of rare birds like red-crowned cranes. (Xinhua/Wang Jianwei)

　　An artificially-bred red-crowned crane is seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, Jan. 10, 2019. Zhalong nature reserve serves as the habitat of over 190 types of rare birds like red-crowned cranes. (Xinhua/Wang Jianwei)

　　An artificially-bred red-crowned crane is seen at Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, Jan. 10, 2019. Zhalong nature reserve serves as the habitat of over 190 types of rare birds like red-crowned cranes. (Xinhua/Wang Jianwei)