There were noise of firecrackers on new year’s Eve and I finally went into peace after several practice. The knee joint of my left foot was painful. Then I changed the position of my left leg several times. Slowly, the pain relieved a lot. During this process, I noticeably felt that there was Qi in my left leg (like ants crawling). The pain weakened a lot in a few days after the practicing, and I fell asleep. Sleep quality is good.