Every time you work hard, you will get better. The previous sentence is that diligence can make up for weakness, which is a good lesson. This sentence is a famous saying of Hua Luogeng. It means: Diligence can make up for shortcomings. This is a useful warning left by the predecessors. As long as you put in some hard work, you can gain some ability.

Diligence can make up for one's weakness, which is a Chinese idiom whose pinyin is qínnéngbǔzhuō. It means that acquired diligence can make up for congenital deficiencies and defects.

Good training refers to useful warning.

A minute of hard work is a metaphor for dedication, and hard work generally refers to field work. It is also a metaphor for hard work in other aspects.

One point of talent is a metaphor for harvesting talent, and talent means the beginning of grass and trees; by extension, it refers to talent, talent, talented people, etc. Extended from the original meaning, it also refers to just now (indicating time).