translation.en: So, I probably have about two more years left on this project -- on this phase of the project, but after five years, I really feel like I know what's at the heart of this work.
translation.zh: 所以，我大概还剩下两年的时间 留给这个项目 或者说这个项目的这一阶段， 但是经历了五年时间， 我真的感到我理解了这项工作的核心。