Japan and China have different customs and don't serve full moon wine, so there is no such word in Japanese. If it is expressed in Chinese, you have to use infectious words.
In Japan, when the baby is 100 days old, a ceremony of "eating at the beginning of the day" will be held, which we call "one hundred-day wish". The Chinese word for "first feeding" means the ceremony of feeding a baby for the first time. The Japanese attach great importance to this ceremony and need to prepare exquisite Japanese tableware. The menu is 1 soup with three dishes, including turtle, red bean rice and a stone.
This ceremony is to pray that the baby can grow up healthily and have food and clothing all his life.