- 血肉相连 xuèròuxiānglián as close as flesh and bloodLinked as closely as flesh and blood; describes a relationship that is inseparable or extremely close
- 骨肉相连 gǔròuxiānglián closely linked as flesh and bloodinterrelated as bones and flesh; used to describe a relationship that is inseparably close or deeply intertwined
- 一脉相连 yīmàixiānglián to be of the same lineageTo be intimately connected or linked together in an unbroken line, especially regarding bloodline, family, or schools of thought.
- 互相连接 hùxiāngliánjiē interlinkedmutually connected or linked together
- 密切相连 mìqièxiānglián closely relatedto be closely related; to be intimately linked