In general worship , Guan Yu is widely referred to as `` Emperor Guan '' ( 關帝 ) , short for his Taoist title `` Saintly Emperor Guan '' ( 關聖帝君 ) , and as `` Guan Gong '' ( 關公 ; literally : `` Lord Guan '' ) .
In later centuries , Guan Yu became a Chinese deity and was given the name Guan Gong , meaning `` Lord Guan '' .