which other places can you find these people?
Hong Kong, Macau, Taiwan, Southeast Asia etc
Han Chinese
 Hong Kong 
where is the largest dam in the world located It spans the Yangtze River by the town of Sandouping, in Yiling District, Yichang, Hubei province, central China, downstream of the Three Gorges. has it experienced any natural calamity? Yes, there are frequent major landslides and river  flooding. how do they maintain the integrity of its structure? UNANSWERABLE what is the most significant culture in the province you mentioned? The Mandarin dialects, Hubei cuisine like Wuchang bream and the traditional Chinese Opera like the Chuju. what kind of population can you find here? Han Chinese, Miao and Tujia what cuisine is famous among the first one? Dim sum, fresh seafood, rice and noodles did these people migrate? Yes, to southeastern and southern China during Wang Mang's reign.
wiki:1194912
Han Chinese [SEP] Hong Kong and Macau
Han Chinese also constitute the majority in both of the special administrative regions of the PRC – about 92% and 88% of the population of Hong Kong and Macau, respectively. The Han Chinese in Hong Kong and Macau have been culturally, economically, and politically dominant majority vis-à-vis the non-Han minorities.