"Eating small portions is the secret to Japan's prosperity"... Japan as observed by the Joseon Tongsinsa

“Eating small portions is the secret to Japan's prosperity”... Japan as observed by the Joseon Tongsinsa - Segye Ilbo m.segye.com
However, they evaluated the quiet and frugal lifestyle of the people positively. The basis for this was the Japanese habit of eating small portions. Lee Gyeong-jik reported, “Rice consisted of only two or three hops, and there were only two or three side dishes.” Nam Ok mentioned, “Looking at what the porters eat... it is nothing more than a few cups of sake and a few hops of rice. Judging by this, there is no place quite like our country when it comes to a lack of moderation regarding food.” Hong Chi-jung identified the secret to Japan's wealth in their frugal lifestyle, mentioning their small portions. He stated, “In exploring the methods of their strength and abundance... they focused simply on simplicity... they eat food served in small bowls, and they eat very little.”
This is an old article,
but it seems Japanese people were born to eat small amounts.