俭 · jiǎn · Frugality 节制 非必要，不增加； 从动作，到念头； 从资源，到消费。 Restraint. Add nothing that is not necessary; From action, to thought; From resource, to consumption. 精益 最少的浪费 去除冗余，去除涩滞 Lean. Least waste Remove redundancy, remove drag