In the early morning of May 20th, members of BEBC and LMMS gathered at the South Gate of the Xi’an Jiaotong University, heading to Wangshun Mountain. Spring tour is a traditional group activity of our research group, aiming to let teachers and students enjoy the weekend together and release the pressure in nature. The tour was full of laughter and we all enjoyed it. At 3pm in the afternoon, everyone reluctantly returned to school by taking bus and had a nice weekend.