(1) This is another set of references to episodes from Romance of the Three Kingdoms. Jiang Gan feigned defection from Wei to Wu, but was secretly a spy. This ploy was discovered and he was tricked with false information. Pang Tong likewise feigned friendliness with Liu Zhang, only to open the doors to Liu Bei. In both cases the common theme is a false gesture of friendship, only Jiang failed where Pang succeeded.
(2) The Sun Yat-sen Mausoleum is indeed located in the same mountains as Ming Xiaoling. They are two of the most notable attractions of modern Nanjing.
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