many good series even need a over 100 chapter to become good (like Tower of God)
There is a term for this in writing and is almost exclusively a very, very BAD thing: DECOMPRESSION. When a story is decompressed, like what we constantly see in Chinese shit, this is a clear sign that the writer is amateur at best, or incompetent at worst. This is also, usually, a sign of a "hot off the presses" sort of script that doesn't go through an editor of any sort, let alone some QA to see if people won't lose interest when nothing is going on for extended periods of time. Koreans, as well, are bad at this shit, and is the reason why I don't read Korean manwa or LN/WNs anymore.