Wuthering Waves allows you to achieve powerful echo effects by absorbing echoes. Here’s how to do it.
By defeating echos, you will be able to absorb them
In order to absorb echos, you must first defeat them. After defeating them, a shimmering silhoutte will appear, which will be the echo you can absorb. Simply press the button indicated to absorb the echo.
Increase the level of the data bank so that rare echoes are absorbed
“Enhanced Absorption Probability” indicates that the Data Bank is more likely to absorb rarer echoes as it is leveled up. A Level 15 Data Bank is recommended to unlock Rank 5 Echoes as soon as possible.

