Aerial photo taken on Oct. 6, 2019 shows the scenery at Lord Bao Park in Hefei, capital of east China's Anhui Province. (Xinhua/Zhang Duan)

　　Aerial photo taken on Oct. 6, 2019 shows the scenery at Lord Bao Park in Hefei, capital of east China's Anhui Province. (Xinhua/Zhang Duan)

　　Aerial photo taken on Oct. 6, 2019 shows tourists visiting Lord Bao Park in Hefei, capital of east China's Anhui Province. (Xinhua/Zhang Duan)

　　Aerial photo taken on Oct. 6, 2019 shows the scenery at Lord Bao Park in Hefei, capital of east China's Anhui Province. (Xinhua/Zhang Duan)

　　Aerial photo taken on Oct. 6, 2019 shows the scenery at Lord Bao Park in Hefei, capital of east China's Anhui Province. (Xinhua/Zhang Duan)

　　Aerial photo taken on Oct. 6, 2019 shows tourists visiting Lord Bao Park in Hefei, capital of east China's Anhui Province. (Xinhua/Zhang Duan)

　　Photo taken on Oct. 5, 2019 shows the scenery at Nam Co Lake in southwest China's Tibet Autonomous Region. (Xinhua/Chogo)

　　Photo taken on Oct. 5, 2019 shows the scenery at Nam Co Lake in southwest China's Tibet Autonomous Region. (Xinhua/Chogo)

　　A yak walks along the bank of Nam Co Lake in southwest China's Tibet Autonomous Region, Oct. 5, 2019. (Xinhua/Chogo)

　　Photo taken on Oct. 5, 2019 shows the scenery at Nam Co Lake in southwest China's Tibet Autonomous Region. (Xinhua/Chogo)