He is known as an expert in subcritical nuclear experiments.

Before starting a new business, he said, 'Nothing ventured, nothing gained.'

He crossed many mountains and rivers to meet her.

He tried to work hard and study at the same time, and in the end, he experienced the lesson of 'He who chases two hares catches neither.'

Please remember this old proverb, 'The friendship of a gentleman is insipid as water.'