A. in the southeast of                  
B. on the southeast of  
C. off the southeast of                 
 D. to the southeast of

     Chinese, unlike many other languages, has a large family of dialects and written forms. Spoken Chinese is
specially complex with more than five recognized dialect groups, even the written language with two recognized
characters.
     The written forms of Chinese include a traditional system of characters and a simplified one. The simplified
version of characters came into use in 1949.
     Traditional Chinese characters are still widely used throughout Asia and among Chinese people around the
world, while the simplified characters are only found in the People's Republic of China.
     It is usually accepted that there are five major dialect groups within the Chinese language group. These are
Mandarin, Wu, Min, Cantonese and Hakka.
     Mandarin is the official language on the Chinese mainland and Chinese Taiwan. It is also one of the four
official languages of Singapore.
     Wu is spoken around the lower Yangtze River and its tributaries (支流). Shanghai is a well-known dialect
of Wu.
     Min is commonly spoken by people in Taiwan, Fujian and Hainan. Cantonese is mainly spoken in the province
of Guangdong. Cantonese is also spoken in many parts of the Chinese Diaspora (移居地), particularly HongKong
and overseas Chinese settlements in the United States, Europe and Southeast Asia. Hakka is the least well-known
dialect group inside China compared to the above four. Most of the Hakka dialect group is scattered (散居)
throughout southeastern China in Guangxi Province. Historically, the Hakka people were northerners who moved
south over several hundred years. Their name Hakka means"guest" indicating their immigrant (移民) status in the
southern areas to which they moved.