Jing Fang did it much earlier. He proposed it in the 1st century B. c.

中国的京房比他早得多。京房公元前1世纪就提出来了。

youdao

Jing Fang did it much earlier. He proposed it in the 1st century B. c.

中国的京房比他早得多。京房公元前1世纪就提出来了。

youdao