Always correspond to things, and there are high levels of mental work, is bound to low-level manual labor, as long as we are able to do its utmost to work on their own doing so.

• 事物总是相对应的，有高层次的脑力劳动，必然有低层次的体力劳动，只要我们能够尽自己的最大努力在自己的工作岗位上持之以恒的做下去。