I refer to Hong Kong barristers’ comments on mainland law being applied at the joint immigration checkpoint for the West Kowloon terminus of the high-speed cross-border rail link to Guangzhou (“Bar Association raps officials for ‘flawed’ argument, says mainland laws at the joint checkpoint will affect all Hongkongers”, March 30)

I agree with the Bar Association. The Hong Kong government says mainland law will only apply to travellers in a designated area of the West Kowloon terminus. However, since the Basic Law states that national laws will only apply on matters relating to defence and foreign affairs, and “other matters outside the limits of the autonomy” of Hong Kong, if mainland law becomes applicable at the joint checkpoint, it would destroy Hong Kong’s right of autonomy.