【尾生之信】〖wi shng zh xìn〗[stubbornly stick to a promise]

尾大不掉机构庞，

生搬硬套修正忙。

之忧不测工农雇，

信马由缰门户放。

比喻只知道守约，而不懂得权衡利害关系。Metaphor only knows keep contract, but not weigh benefit harm relationship.