It can be understood that the numbers and Chinese characters you say are not on the same bottom line, that is to say, the numbers and Chinese characters are not on the same bottom line.

This is correct. Numbers, letters and other western numbers and Chinese characters are not on the same bottom line, not just PS, but almost all software, including our writing.

The horizontal alignment mentioned in software includes that writing is not baseline alignment, but baseline alignment. Here we need to understand the baseline of the text. Baseline is not a baseline. Baseline itself is the concept of western language, which is the position where the main body of western letters is aligned at the bottom. Here, it is the main body, as shown below.

It can be understood that the third line is the baseline, not English. If it is Chinese, we all know that writing one, two and three can't all be bottom-aligned. We can understand that Chinese also has a baseline, so we won't study it. The software will display it when typing, as shown in the figure.

If numbers or letters must be aligned with the Chinese bottom line in some cases, you can select the part to be adjusted and adjust the baseline offset separately. PS has this function.

There is a baseline offset in the text panel, which defaults to 0 point, that is, there is no offset, and it is changed to a positive value upward and a negative value downward.