If you don't go to Beijing for an interview, you don't have to give up or explain in your email that you don't want to attend the interview. You can throw the dice at each other and see if they can create an interview. If there is the best. If no one knows your difficulty, you don't have to say "sorry, I can't come" very hard.

Manager XXX:

Hello, I am honored to receive the interview notice from your company, but I am in Shenzhen and the interview place is in Beijing. Considering the inconvenient transportation, can we use telephone interview or other convenient and effective forms to complete the interview? !