Chinese name: 毛白杨, maobaiyang.
A label on this tree indicates an age of 300 years.
In Korean 시시나무. In some Korean field guides refered to as Populus tremula var. davidiana, in others as Populus davidiana. The favorite tree of Pteromys volans (P. volans scat often found at the base of P. davidiana).
Plantarium.ru (online plants guide):
https://www.plantarium.ru/page/view/item/29723.html
Royal Botanic Gardens, Kew - Plants of the World Online: https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:776822-1