Netease Cloud's signature can be modified. Click the three icons in the upper left corner. In the page that opens on the left, click the avatar of the account. In the interface that opens, click Edit Options.

Then, in the open my profile interface, click the signature option. Open the modify signature interface, enter a new signature, and click Save. After saving the new signature, return to my profile interface and you can see the modified signature. At the same time, if you have changed your signature once, there is no way to change it again within a certain period of time.