Tourists visit the Xiamen Botanical Garden in Xiamen, southeast China's Fujian Province, Sept. 9, 2020. The garden was established in 1960 and covers an area of 4.93 square kilometers. (Xinhua/Jiang Kehong)

Tourists visit the Xiamen Botanical Garden in Xiamen, southeast China's Fujian Province, Sept. 9, 2020. The garden was established in 1960 and covers an area of 4.93 square kilometers. (Xinhua/Jiang Kehong)

Tourists visit the Xiamen Botanical Garden in Xiamen, southeast China's Fujian Province, Sept. 9, 2020. The garden was established in 1960 and covers an area of 4.93 square kilometers. (Xinhua/Jiang Kehong)

Tourists visit the Xiamen Botanical Garden in Xiamen, southeast China's Fujian Province, Sept. 9, 2020. The garden was established in 1960 and covers an area of 4.93 square kilometers. (Xinhua/Jiang Kehong)

Tourists visit the Xiamen Botanical Garden in Xiamen, southeast China's Fujian Province, Sept. 9, 2020. The garden was established in 1960 and covers an area of 4.93 square kilometers. (Xinhua/Jiang Kehong)

Aerial photo taken on Sept. 9, 2020 shows tourists visiting the Xiamen Botanical Garden in Xiamen, southeast China's Fujian Province. The garden was established in 1960 and covers an area of 4.93 square kilometers. (Xinhua/Jiang Kehong)

Tourists visit the Xiamen Botanical Garden in Xiamen, southeast China's Fujian Province, Sept. 9, 2020. The garden was established in 1960 and covers an area of 4.93 square kilometers. (Xinhua/Jiang Kehong)