

After the celebration, dozens of environmental workers concentrated on cleaning the area.

Litter was found on pedestrian streets around the lake, including Dinh Tien Hoang, Hang Bai and Le Thai To.

Rubbish was mostly plastic waste such as plastic bottles and bags.

Rubbish could be found everywhere, even on trees and flower pots.

Nguyen Thi Thu, an environmental worker, said that it took her and her colleagues several hours to clean the area.

Environmental workers expected that people would have better awareness to protect the environment so that they could save more time for the work.

Despite dustbins being arranged, many people threw the litter on the streets.

More vehicles were used to transport the rubbish.