Aerial photo taken on Nov. 14, 2019 shows the autumn scenery of the Zishan Park in Congtai District of Handan, north China's Hebei Province. Transformed from an area with over 40 coal mines, Zishan Park has been upgraded in recent years through ecological restoration and landscape enhancement, which has attracted lots of people to have a visit. (Xinhua/Mu Yu)

　　Aerial photo taken on Nov. 14, 2019 shows the autumn scenery of the Zishan Park in Congtai District of Handan, north China's Hebei Province. Transformed from an area with over 40 coal mines, Zishan Park has been upgraded in recent years through ecological restoration and landscape enhancement, which has attracted lots of people to have a visit. (Xinhua/Mu Yu)

　　Aerial photo taken on Nov. 14, 2019 shows the autumn scenery of the Zishan Park in Congtai District of Handan, north China's Hebei Province. Transformed from an area with over 40 coal mines, Zishan Park has been upgraded in recent years through ecological restoration and landscape enhancement, which has attracted lots of people to have a visit. (Xinhua/Mu Yu)

　　Aerial photo taken on Nov. 14, 2019 shows the autumn scenery of the Zishan Park in Congtai District of Handan, north China's Hebei Province. Transformed from an area with over 40 coal mines, Zishan Park has been upgraded in recent years through ecological restoration and landscape enhancement, which has attracted lots of people to have a visit. (Xinhua/Mu Yu)

　　Aerial photo taken on Nov. 14, 2019 shows the autumn scenery of the Zishan Park in Congtai District of Handan, north China's Hebei Province. Transformed from an area with over 40 coal mines, Zishan Park has been upgraded in recent years through ecological restoration and landscape enhancement, which has attracted lots of people to have a visit. (Xinhua/Mu Yu)

　　Aerial photo taken on Nov. 14, 2019 shows the autumn scenery of the Zishan Park in Congtai District of Handan, north China's Hebei Province. Transformed from an area with over 40 coal mines, Zishan Park has been upgraded in recent years through ecological restoration and landscape enhancement, which has attracted lots of people to have a visit. (Xinhua/Mu Yu)