Art pieces are seen at the preview of "Kogei 2020 - The Art of Crafting Beauty from Nature" exhibition in Tokyo National Museum, Tokyo, Japan, on Sept. 20, 2020. The exhibition showing over 80 pieces of traditional Japanese crafts (also called Kogei) will be held from Sept. 21 to Nov. 15, 2020. (Xinhua/Du Xiaoyi)

Visitors wearing face masks view art pieces at the preview of "Kogei 2020 - The Art of Crafting Beauty from Nature" exhibition in Tokyo National Museum, Tokyo, Japan, on Sept. 20, 2020. The exhibition showing over 80 pieces of traditional Japanese crafts (also called Kogei) will be held from Sept. 21 to Nov. 15, 2020. (Xinhua/Du Xiaoyi)

A visitor wearing a face mask views art pieces at the preview of "Kogei 2020 - The Art of Crafting Beauty from Nature" exhibition in Tokyo National Museum, Tokyo, Japan, on Sept. 20, 2020. The exhibition showing over 80 pieces of traditional Japanese crafts (also called Kogei) will be held from Sept. 21 to Nov. 15, 2020. (Xinhua/Du Xiaoyi)

A visitor wearing a face mask views art pieces at the preview of "Kogei 2020 - The Art of Crafting Beauty from Nature" exhibition in Tokyo National Museum, Tokyo, Japan, on Sept. 20, 2020. The exhibition showing over 80 pieces of traditional Japanese crafts (also called Kogei) will be held from Sept. 21 to Nov. 15, 2020. (Xinhua/Du Xiaoyi)

Visitors view art pieces at the preview of "Kogei 2020 - The Art of Crafting Beauty from Nature" exhibition in Tokyo National Museum, Tokyo, Japan, on Sept. 20, 2020. The exhibition showing over 80 pieces of traditional Japanese crafts (also called Kogei) will be held from Sept. 21 to Nov. 15, 2020. (Xinhua/Du Xiaoyi)