Astrocytes are one of the important support cells in the brain.

He said, 'A nameless star comes out in the evening,' teaching me that achieving a goal is not easy.

There is a proverb that says, 'Plan your day in the morning and your year on New Year's Day,' which means that you should plan your day in the morning and your year on New Year's Day.

He is so engrossed in his work, it's like 'Wu's cow gasping at the moon'.

He reacts excessively to even small problems, like the proverb 'Kureushi Tsuki ni Aegu' which means 'excessive fear'.

He is always facing difficulties, just like the proverb 'clouds over the moon, wind in the flowers'.