I haven’t thought of it yet that text in multiple CAD files can be replaced in batches. For multiple files, text in all blocks can be replaced in batches. Maybe the CAD software on the market currently does not support this function. If you want to replace, you can only replace the text in the block step by step.

Method 1: 1. First open the file to CAD, enter find on the command line and the "Find and Replace" pop-up window will pop up. Enter the content you need to find and the content after replacement, and select Replace All , a small pop-up window will appear, just select "Replace only Chinese text in block". See picture below.

Method 2: Expand the tool in Haochen CAD2021--Block Tool--Replace Block to replace. The same blocks in the file will have the same name. We can create a block with the same shape and size but different text, and then replace the block, so that the text in the block can be completely replaced. See picture below.