Hi,I'm Mr Poon and I am a Singaporean, my wife who is holding a Cambodia passport with an valid working permit and we would like to visit hong kong for 1 days and travel to Shen Zhen (China) on the next day and stay there for another 5 days. We will travel from Shen Zhen to Hong Kong again on the 6 days and fly back to Singapore on the 7th day. May I know what is the Visa requirement to travel to and fro from Hong Kong and Shen Zhen (China)? Can I apply visa from China Embassy in Singapore?