At 7 p.m. on December 30,2019, Liu Haolan, a 19-year-old female college student in Yantai, Shandong Province, has not returned to the seaside of Yangma Island so far by taxi alone. The missing girl's school found that she was not in the dormitory during the night's bedtime check. Missing the day was the girl's birthday, the next day, the girl's mobile phone was found in Yantai Yangma Island Ocean Ranch in front of a ticket office. After reading the surveillance that found the location of the girl's mobile phone, it was found that the girl had appeared in the surveillance screen twice at 9:39 p.m. on the 30th, and had never been seen again. As at 6 January 2020, the search was ongoing.