 Meng Da's original courtesy name was "Zijing", but he changed it to "Zidu" to avoid naming taboo because "Zijing" was also the courtesy name of Liu Bei's uncle.In 219, Meng Da was ordered to lead a force from Zigui () to attack Fangling ().After conquering Fangling, Meng Da advanced further north and captured another city, Shangyong (), where he rendezvoused with Liu Feng, Liu Bei's adoptive son.