 Complete the following phrase:  The 2019 Marvellous 12  was a qualifying event organized by the Chinese Table Tennis Association, Tencent Sports and Shenzhen Municipal Culture, Sports and Tourism Bureau. It will be held in Shenzhen, China from 28 February to 3 March, 2019. It was the second edition of the tournament, and the second time that it have been held in Shenzhen. Winners and runners-up of the mens and womens singles event, namely Fan Zhendong, Liang Jingkun, Chen Meng, and Sun Yingsha, was each guaranteed a spot to represent China in the 