The Mods menu, inside the game
A 模组 button in Nomad Drive's main menu and pause menu, with everything in one place:

• 浏览模组 from this site and install them right there: virus-scanned, checked after download, no app needed
• Nexus 模组: browse Nomad Drive mods on Nexus Mods (installs through Nomad Mod Downloader)
• Installed: update, switch on and off, and uninstall your mods; updates for this site's mods in one click
• Mod settings: change any mod's settings while you play
• Profiles, save backups, a multiplayer mod check with share codes, and a Problems page that names the mod that broke
• Sign in with your account here to get update notifications and endorse mods from the game

Which file?
Pick the one for your BepInEx: For BepInEx 5 或 For BepInEx 6. Not sure? Get BepInEx from this site's How to install › Get BepInEx tab, or let Nomad Mod Downloader set everything up (How to install › Get Downloader).

Install by hand
Unzip into your Nomad Drive folder (the one with Nomad Drive.exe) and let it merge. Start the game: the 模组 button is in the main menu.