一张一弛

Explanation: Strict means that the combination is the King Wen King Wu's method of governing the country. Elastic is used to mean life and work of work and rest to a reasonable arrangement. 　　Usage: Joint type; as predicate; with commendatory 　　Source: "Book of Rites miscellanies under the" Chang without relaxation, civil and military unable to answer too; relaxation and not sheets, as also civil and military Eph. 1 1 relaxation, civil and military way too. " 　　Examples: Learning and working should have rhythm, ~, there is a Plaza labor, so as to improve efficiency. Thesaurus:  wait at one's ease for the fatigued enemy, dwell under one's vine and fig tree, Great cry and little wool., to harp on the same string., new wine in old bottles, it produces silk and traps itself, get up steam; conserve strength and store up energy, fare worse and worse for all one's scheming, (of a nation) recuperate and multiply, A relaxation one, To be the Labour Lost