 The islands have been under PRC control since October 9 or October 15, 1949 initially as part of Nan'an County.On the day of Qingming Festival in 2005, a monument to the more than 300 PLA soldiers who died during the struggle was erected on Dadeng Island.In the lead-up to the Battle of Kuningtou in late October 1949, the PLA gathered forces in Aotou () (in Xindian, Xiamen), Dadeng (Tateng) and Lianhe (Lienho) () (then part of Nan'an County, now also in Xindian).