On May 26, 2021 CASCO Wuhan Branch, together with Wuhan Metro Operation Company, launched a public welfare activity of "Protecting the Mother Yangtze River Together", calling attention to the problem of riverine waste and creating a harmonious ecological environment.

Located at the confluence of two rivers, Wuhan is a city that lives with water and has a long river shoreline. The upcoming flood season will bring about continuous precipitation, which will certainly trigger a chain reaction of environmental pollution and ecological damage if the riverine waste enters with the rainwater into the Yangtze River. Therefore, 58 volunteers from CASCO Wuhan Branch and Wuhan Metro Operation Company's Signal Center gathered at the Hankou Riverbank to build the last defense line before the waste entered the water.

Through this activity, the volunteers realized that the purpose of beach cleaning is not only to beautify the landscape and improve the ecology of the river, but more importantly, to take practical actions to arouse people's attention to public welfare and attract more people to participate in the protection of the Yangtze River.