侯嬴 / Hou Ying
侯嬴 / Hou Ying enters the wiki through 《资治通鉴·周纪》95丨长平之战后秦国为什么没有灭了赵国（3） as the 信陵君 adviser who judges whether 虞卿 and 魏齐 should be received after fleeing 赵国.
His role is brief but structurally important. When Xinlingjun hesitates because receiving Wei Qi risks offending 秦国, Hou Ying answers by stressing how hard it is to know others and be known by others. He points to Yu Qing’s history: repeated recognition by 赵丹 / 赵孝成王, rise to high office, and willingness to abandon wealth and rank for a friend.
The episode uses Hou Ying as a gatekeeper of aristocratic reputation. His argument turns hospitality from a private courtesy into a public test of character: if Xinlingjun refuses a person who has already sacrificed office for friendship, the refusal would damage his own standing as one of the 战国四公子.