What does taxing highland barley mean?

The name of the volunteer service team. According to the official website of the Shaanxi Provincial Taxation Bureau of the State Administration of Taxation, in May 2023, the Taxation Bureau of the Yangling Demonstration Zone established a "Taxation Highland Barley" volunteer service team with an average age of 28 years old. Through online and offline combined learning, party members and league members integrated learning, We carry out rich and colorful theoretical studies and practical discussions in the form of agency team linkage studies to lead young volunteers to improve their ideological understanding. This sentence is the name of the volunteer service team.