How do Shanghai lawyers get marriage certificates in Hong Kong?

Contact lawyers in China and Hongkong for assistance. According to the inquiry of China Travel Service. The legal systems in China and Hongkong are different from those in the Mainland. China and Hongkong have independent legal systems. If you register your marriage in China Mainland and Hong Kong, you can't verify the authenticity of the marriage certificate in the Mainland, so you need to contact lawyers in China Mainland and Hong Kong for assistance.