1. If you are not specialized, you can't. -Su Shi's Song Dynasty Book on Two Systems

Translation: If you don't concentrate on one thing, you can't concentrate, and you can't achieve anything without concentration.

2. It's already late in spring, and an inch of time is worth an inch of gold. -Wang Zhenbai's Two Poems of Bailudong Part I in Tang Dynasty

Concentrate on reading, and before you know it, spring is over, and every inch of time is like an inch of gold.

3. You can't succeed without specialization, and you can't pass without dabbling. ? -Qing? Liang Qichao's Monthly Reading Course

Translation: Reading can't be achieved without concentrating on one subject, and it can't be bypassed without reading extensively.

4. You can't see with both eyes and hear with both ears. -The Warring States Period "Xunzi? The eyes cannot see two things clearly at the same time, and the ears cannot hear two sounds clearly at the same time.

5. The number of games played today is decimal; If you don't concentrate, you can't do it. -Mencius Gaozishang in the Warring States Period

Mencius said: "Playing chess is just a small skill, and you can't learn it if you don't concentrate on it.