Sakoku or Closed-door Policy is false interpretation of Japan's foreign policy from the 16th to the mid-19th century.
Dumpling contamination in China is being exaggerated in the Japanese media.
Even for ordinary Japanese, it is disgusting. So, I examined the Sino-Japanese trade in the past. Surprisingly, almost everything has been unchanged.
In Japan, it has been said that Japan took a sakoku or closed-door policy from the 16th to the mid-19th century. Now, I know that this theory is not true at all and that this theory was fabricated by the future Japanese government for their convenience.
If it is said that Japan took a sakoku policy in the past it also can be said that Japan still takes the same sakoku policy.
Japan's Conspiracy (1) P7