The full name of the fire box is Northwest University Tang Zhongying Love Society Fire Box, which was formally established on April 8, 20 10. It is one of the institutions under the Tang Zhongying Love Society of Northwest University, aiming at providing a public platform for primary and secondary school students in China. The "Firewood" mailbox provides a communication platform for college student volunteers of Tang Zhongying Love Society of Northwest University and primary and secondary school students in China through letters, and provides a new channel for primary and secondary school students in China to solve their puzzles in study and life. For example, you can talk to them about learning methods, cope with learning pressure and psychological confusion, and there will be special volunteers in the mailbox to reply. E-mail address "Payfire" of Tang Zhongying Ai Xin Institution, Northwest University South Campus, Chang 'an District, Xi City, Shaanxi Province E-mail address: 7 10 127.