V2Ray is a tool under Project V.
Project V is a project that includes a set of tools for building specific network environments, and V2Ray is the core one.
The Project V manual said Project V is a set of tools to help you build your own privacy network over the internet. The core of Project V, named V2Ray, is responsible for network protocols and communications. It can work standalone, as well as combine with other tools. However, in terms of launching time, Project V is prior than V2Ray. If you still don’t understand, then we simply say, V2Ray is a similar proxy software to Shadowsocks. V2Ray can be used to access the internet (over the censorship) to learn advanced science and technology from the free internet.
V2Ray 是 Project V 下的一个工具。
Project V 是一个包含一系列构建特定网络环境工具的项目，而 V2Ray 属于最核心的一个。
官方介绍中 Project V 提供了单一的内核和多种界面操作方式。内核（V2Ray）用于实际的网络交互、路由等针对网络数据的处理，而外围的用户界面程序提供了方便直接的操作流程。 不过从时间上来说，先有 V2Ray 才有 Project V。 如果还是不理解，那么简单地说，V2Ray 是一个与 Shadowsocks 类似的代理软件，可以用来科学上网（翻墙）学习国外先进科学技术。