Whole in Chinese / Japanese...

In China, 哄堂大笑 is a proverb that is used in response to a good joke or witty comment.

The story goes that Mr. Feng and Mr. He were both senior officials in the Song Dynasty (about a thousand years ago). One day, Mr. Feng walked into their shared office wearing a new pair of boots. The boots caught the eye of Mr. He who said, “New boots! - how much were they?.” Mr. Feng lifted one of the boots off the ground as if to show it off and responded, “900 coins.”
Astonished, Mr. Feng explained, “900? How can that be? - I paid 1800 coins for my boots!.” Mr. Feng then lifted his other foot off the ground and said, “This boot was also 900 coins.”

It is said that the whole room was shaking from the laughter of all that heard Mr. Feng's joke on Mr. He.

全心 is a short title that means “with heart and soul” or “one's whole heart.”

It literally reads “whole heart” or “complete mind.”

The first character means all, whole, entire, or complete.

The second character means heart but can also refer to the mind or soul.

This proverb can be translated as the whole world at peace, peace and prosperity, peaceful and tranquil, peace reigns over the land, times of peace, peace and tranquillity, peaceful world, or from the Greek, times of halcyon.

Sometimes (rarely) written as 天下泰平 (variant 3rd character).