Foreign travellers walk along the trekking route near Namche Bazar, which is known as gateway to Mount Qomolangma, in Solukhumbu district, Nepal, Nov. 9, 2019. Autumn is the major season for trekking and mountaineering in Nepal. (Photos: Xinhua)

Travellers walk along the trekking route near Namche Bazar, which is known as gateway to Mount Qomolangma, in Solukhumbu district, Nepal, Nov. 9, 2019. Autumn is the major season for trekking and mountaineering in Nepal.

Photo taken on Nov. 9, 2019 shows a foggy view of Namche Bazar, which is known as gateway to Mount Qomolangma, in Solukhumbu district, Nepal. Autumn is the major season for trekking and mountaineering in Nepal.

Foreign travellers walk along the trekking route near Namche Bazar, which is known as gateway to Mount Qomolangma, in Solukhumbu district, Nepal, Nov. 9, 2019. Autumn is the major season for trekking and mountaineering in Nepal.