What is a slogan designed for Mogao Grottoes?

The slogan is as follows:

1. The Mogao Grottoes, a wonderland on earth, has exquisite painted sculptures and magnificent murals, which make people forget to leave.

2. The pride of Feitian, the palace of art.

3. Dunhuang murals show exquisite skills, and the Chinese spirit shines.

4. The slogan is that you must go to Dunhuang once in your life.

5. A treasure of art and a crystallization of wisdom.