What is shallow?

In the game "Genshin Impact", the title of Tinari is shallow and light, which comes from sumeru and belongs to the grass element. He is a young scholar who is proficient in botany, and now he is a forest ranger in Daochenglin.

In the game, the time for Tinari to slam three times is 12 second, and the cooling time is also 12 second, so it is necessary to slam three times in 12 second.