Then, if it is the software that others enjoy copyright (especially if they have applied for copyright registration), you have violated the information network communication right and reproduction right of the software.
Appropriate modifications are basically based on other people's works, infringing on others' right to modify.
As for the "Yao Hehe" upstairs, it's like thousands of listening desktop lyrics. Many other softwares are similar to it, and the implementation method is definitely poor, but have they all been handed over to Qian Qian? Not exactly. "This sentence is puzzling. First of all, how can the lyrics desktop that looks very similar jump out to a conclusion that their source codes are similar? Secondly, if it is almost the same, it must be the copyright infringement of the copyright owner (not necessarily Qian Qian, who should write the source code first, I don't know who). China's copyright protection is not conducive to the protection of intellectual property rights, and the copyright owner has poor awareness or is unwilling to sue for infringement, but this does not mean that there is no infringement! ! !
It's like many people owe you money, but everyone only owes you five dollars and ten dollars, but it takes a lot of time and yourself to collect the debt. Just think about it, but the fact that these people owe you money is undeniable! This is the current situation of intellectual property protection in China.