"Kai Da and Suppress" is clearly explained in "Sheng Ji Zong Lu": "Kai Da means that those who are concealed will be dispersed; if they are suppressed, those who are vigorous will have a destination." In vernacular, it means relaxing the muscles and dredging the collaterals, regulating the muscles and recuperating, activating blood circulation and removing blood stasis.
"Most massage techniques are based on the purpose of opening up and inhibiting", which comes from "Shengji Zonglu", literally meaning: most massage techniques are used to dredge and regulate, remove blood stasis and dissipate knots Lord.