(1) The outer door of the official office or camp. [1]
(2) The outer door of the palace. [1]
(3) The outer door of the imperial mausoleum.
(4) Refers to Jinling Jianye The Dasima Gate of the Palace. "Mozi's Order": "Those who are loyal to officials, those who are harmless and can do anything, order the general to guard, build a ten foot wall, return the wall in the Zhou Dynasty, and those who have a daughter are not ordered to guard the Sima Gate." Sun Yirang's exegesis: "This Sima Gate seems to be the gate of the order abiding officials, not the public gate."
"Records of the Historian · The Chronicle of Xiang Yu": "Zhang Han was afraid to send Chang Shixin to ask for help. When he arrived in Xianyang, he stayed at Sima Gate for three days, but Zhao Gao did not see him. He had a heart of disbelief
"Records of the Three Kingdoms · Wei Zhi · Biography of Chen Siwang Zhi": "Zhi Zhi tried to drive along the road, and opened Sima Gate. The Taizu was so angry that the bus killed him."
Ming Dynasty · Huang Daozhou's "Jiehuan Yuan Gongzhuan": "When Fang was in Sima Gate, he would kill the old chieftain. Yuan Jinglue sent a monk to hang him as a gift. Gong (Yuan Keli) tried to slander him for insulting the country."
Tang · Wen Tingyun's Song of Dawn in Taicheng: "There are thousands of torches in front of Sima Gate, and the stars are dying out." Gu Sili proofread: "There are five gates in Jianye Palace of Jinling Annals: the big Sima Gate in the south."
