This plan will be implemented for five years. The Song Dynasty will need to send a large number of caravans to Goryeo and Japan to negotiate with local merchants, promote the development of the clothing industry, and make the clothing industry a pillar industry of Japan and Goryeo.

By drawing in a large number of people and providing abundant material rewards, agriculture, a fundamental industry, is brought to its knees.

Subsequently, Zhao Huan decisively cut off the purchase of commoners, causing a precipitous collapse in both Japan and Goryeo.

In this way, the frog is boiled to death in warm water.

Subduing the enemy without fighting!

When Tang Ke and Zhao Ding proposed this plan, they were both afraid.

This is utterly devastating, even more terrifying than directly sending troops to attack the city.

At that time, famine and great turmoil will inevitably break out in both Japan and Korea.

For the wealthy Song Dynasty, purchasing civilians from these two countries for several years was nothing special.

The taxes paid annually by any one of the Song Dynasty's routes were many times higher than the annual tax revenue of Japan.

It is incredibly easy for a large country to launch an economic attack on such a small country with a small population and a barren industrial base.

Moreover, Japan is currently in a state of chaos.

In fact, trade with the Jin Dynasty could also be conducted in the same way!

The Song Dynasty and the Jin Dynasty have been engaging in large-scale trade for three years!

Since Zhao Huan agreed to Wanyan Zongpan's request, trade between the two countries in the north has flourished like never before.

The Jin state seems to be getting used to trade with the Song dynasty, and even the former opponents in the Jin court are starting to get used to and accept it.

At this point, Zhao Huan could also begin to slowly implement economic warfare measures.