zi3
bamboo mat; bed mat

strokes 10
radical
strokes after radical 5
床笫 床笫 chuang2 zi3
bed and bamboo sleeping mat; (fig.) bed as a place for intimacy

床笫之事 床笫之事 chuang2 zi3 zhi1 shi4
bedroom matters; sexual intercourse

床笫之私 床笫之私 chuang2 zi3 zhi1 si1
intimate matters