gōngchǎng bǎ liúshuǐxiàn shēngjí zhīhòu, chǎnliàng shàngqù le, gōngrén fǎn ér qīngsōng le

工厂把流水线升级之后，产量上去了，工人反而轻松了。

After upgrading the assembly line, the factory's output increased and the workers actually had an easier time.