chicken island was an uninhabited island. in june 2004, chen mingzhe (陈明哲), a taiwanese attained fifty years use right of chicken island. after two years, they built up a wharf which depth is between 30 and 40 miles and width is 5 miles, a road which length is 9 kilometers which surrounds the island and completed the water system, hydro system and network system. he also develop chicken island into a tourist attraction. the table above is the tourist economy of chicken island in 2011.