回複：父母探親簽證，北京使館通過！

Could you please send me some information about the letter. I invited my mother in April, but she was rejected. My mother told me the officer only read the letter I write to her then rejected her application and didn't say anything. I thought it's because I didn't have a good reason in that letter. I'm going to prepare meterials for both my mother and my parents-in-law this time. could you please give me any suggestion on the letter. I do appreciate that.