Seal: fēng?

I. Explanation:

1. seal, isolated from the outside world: seal, seal, seal, seal, seal, seal, seal, front cover, back cover, block and cover. Frozen snowdrift, closing hillsides to facilitate afforestation.

2. A paper sleeve for holding letters, money, etc. : envelope, reward seal.

3. The emperor gave land or titles to relatives or courtiers: marquis, monarch (nobles with fiefs), city, worship (official knighthood), code and feudal system.

4. Borders: borders, territories and borders.

5. restriction: stay where you are.

6. The emperor built an altar to worship heaven: collecting Zen.

7. quantifier, what is used to wrap an envelope: letter.

8. Last name.

Second, the example:

And five people can also add their soil seals. -Five Tombstones by Zhang Ming Pu

The so-called plain, Xia Ze also. Although there is a small seal, it must not be high. -"pipe"

A mound or deposit shaped like a grave.

King An Kun ascended the throne and named his son Xinlingjun. -"Historical Records Biography of Wei Gongzi"

Liu Liangzuo, one of the four towns in Hong Guang, was named Square Wave. -Shao Qing Heng Chang's Biography of Yandian History

When the emperor awarded titles and land to his officials, it was also called a seal.