Feature: Healing Nairobi's "kidney": How Chinese tech is reviving the "place of cool waters"

by Yang Dingdu, Li Zhuoqun, You Huiyuan

NAIROBI, March 22 (Xinhua) -- When the Maasai people first traversed the sun-drenched plains of East Africa, they were struck by a network of crystalline streams. They named the site Nairobi,meaning "the place of cool waters."

Today, that poetic name faces the harsh reality of a burgeoning megacity of over 5 million residents. As Nairobi grows into an industrial and