Done with “The Mystery of the Fire Dragon” by Carolyn Keene

Finding Chi Che Soong leads the detectives to Hong Kong where Mr. Drew has a case and Nancy’s special friend, Ned Nickerson, is a college exchange student. He can speak a little of the Cantonese language and knows his way around so he can show them the sites of the city. Of course Bess and George come along. George even gets to impersonate Chi Che as she looks very similar to the missing girl.

The version of the book I have was written in 1961 and has some interesting trivia about Hong Kong. At that time, Hong Kong was a British colony but in 1997 sovereignty was transfered to China. According to Wikipedia, the official name is: Hong Kong Special Administrative Region of the People's Republic of China. Hong Kong has a high degree of autonomy from China.

This is a good book in the Nancy Drew series. You can buy it here: