I use Telegram daily and like it very much, but one thing has bothered me for so long, that there is no meaningful way to search through messages in a language

I use Telegram daily and like it very much, but one thing has bothered me for so long, that there is no meaningful way to search through messages in a language like Chinese. It looks that they only allow search with words, not in characters within words. It is so arrogant for them to ignore this for so long after users brought up the issue.