Part B Suppose you are a student of Beijing University. You went to Shanghai last month and unfortunately lost your bag there with your student card, identification card and 200 yuan in it. When you got back to Beijing, you received a parcel in which the two cards and the handbag are contained, and a bill of 200 yuan. From the address, you know he is Li Ming, a sophomore of the Physics Department of X University. Now you want to write a letter of commendation to Wang Yin. You should write appropriately 100 words. Do not sign your own name at the end of your letter. Use 'Wang Lin' instead. You do not need to write the address.