Infinite word explanation

Pinyin: five tones

Explanation: 1 Endless, infinite. Of space without boundaries or ends. 2. Endless, infinite. Time has no end. 3. Endless, infinite. Endless things. 4. Endless, infinite. Describe a lot. 5. There is no end; There is no limit.

For example, when a mirror is quenched, it will be bright, and steel refining will be strong. It's an invention that all kinds of academics keep coming into China and getting familiar with them.