Java
JDK 8-11
OptiFine
This version needs the OptiFine 1.15.2 HD U G6. Then put the OptiFine into your mods folder after downloading it. Download:
Official website
https://optifine.net/adloadx?f=OptiFine_1.15.2_HD_U_G6.jar&x=6b93
Mirror station(China)
Warning!
This version won't be supported!
Neoforge:https://modrinth.com/modpack/railway-network-access/version/1.20.1-b1.0.0(MTR)