The Book of Liang mentions a kingdom called Poling or Poli southeast of Guangdong. Thought to be located in the Malay Peninsula, the people of this kingdom are said to have customs identical with Cambodia and the same produce as Siam. Their weapons are purportedly the same as China with the exception of the chakram which locals are said to be highly skilled with. Art associated with the candi of Indonesia displays the weapons of the time. Among the weapons featured in murals are swords, shields, bows, clubs, spears, kris, and halberds. The carved dvarapala (gate guards) found in temples around the region are ogres armed with clubs and swords. Between the 11th and 14th centuries, silat reached its peak under Majapahit. Founded by Raden Wijaya after repelling the Mongols, the empire united all of Indonesia's islands and extended its influence into peninsular Malaysia. Silat was and in some cases still is used by the defence forces of various Southeast Asian kingdoms and states in what are now Indonesia, Malaysia, Singapore, Vietnam, Thailand and Brunei.