In Jiashi County, Xinjiang, the water conservancy personnel Wang Jun has been guarding the "source of life" of 460000 people of all ethnic groups for more than 30 years. Since starting work in 1994, he has always engraved his sister's teachings of "being down-to-earth and persevering in work" in his heart.

Jiashi County was once deeply affected by the pain of drinking water, with arsenic and fluoride in the water severely exceeding the standard, and the health of the people was worrying. In 2019, the urban and rural drinking water safety project in Jiashi County was launched, which requires water to be diverted from the Gaizi River more than 100 kilometers away. As the person in charge of quality supervision and safety production, Wang Jun dare not slack off at all. The project's water supply is just the beginning. To ensure that the water quality meets the standards, he insists on inspecting the 1827 kilometer long water supply network every quarter, rain or shine.

Whenever it's quiet at night, Wang Jun always video connects with his sister overseas, excitedly recounting the great changes in his hometown: "Sister, the people here finally have access to clean and sweet tap water!" This cross mountain news is not only the best reward for his sister's teachings, but also the most simple adherence to his original intention as a grassroots water conservancy worker.Editor/Cheng Liting