# Week 3 Updates In week 3 of my ethereum fellowship most of my time was spent at the ETHCC attending the workshops, talks, and meeting other fellows. Highlight of my week 3 was meeting my mentor Mark Holt from the Erigon team. I talked with him regarding the FOCIL implementation in Erigon and whats the best execution plan for it. I also showed him my implementation details and how I was thinking about implementing it in the execution layer for Erigon. **Upcoming week** In my Week 4 updates i will dive deeper into the changes that are needed to be added in the execution layer for Erigon.