C # has been developed for many years, and many programmers like to use it to write various kinds of tool software. Recently, the programmers who have always pursued "Talk is Cheap, Show me the code" have started a new round of "whole work". On a whim, one of the software engineers, Bartosz Korczynski, rebuilt Visual Basic 6, which had been scrapped by Microsoft 16 years earlier, in C.VB6) IDE. For him personally, it was initially just out of interest to develop a "fun toy project". Unexpectedly, as soon as the project was completed and open sourced on GitHub (https://github.com/BAndysc/AvaloniaVisualBasic6), it hit the headlines of HN (Hacker News) and attracted the attention of a large number of developers. Even many people left messages, "I hope this project, which is regarded as a small toy by the author, will continue, because I still have to interact with a very large VB6 code base on a regular basis.".