Three people who have been trapped in a sudden ground collapse accident in south China city of Guangzhou remain missing as of Sunday evening, according to local authorities. (Xinhua)

Three people who have been trapped in a sudden ground collapse accident in south China city of Guangzhou remain missing as of Sunday evening, according to local authorities. (Xinhua)

Three people who have been trapped in a sudden ground collapse accident in south China city of Guangzhou remain missing as of Sunday evening, according to local authorities. (Xinhua)

Three people who have been trapped in a sudden ground collapse accident in south China city of Guangzhou remain missing as of Sunday evening, according to local authorities. (Xinhua)

Three people who have been trapped in a sudden ground collapse accident in south China city of Guangzhou remain missing as of Sunday evening, according to local authorities. (Xinhua)