在古老的中国，道家首创冶炼技术是一个不争的事实。

In ancient China, the first Taoist smelting technology is an indisputable fact.

youdao

在古老的中国，道家首创冶炼技术是一个不争的事实。

In ancient China, the first Taoist smelting technology is an indisputable fact.

youdao