wow, this was unexpected, I'm impressed.
good thing for me: I could not yet complete a research, I'm just lacking a bit mana. I guess, that research will have to wait for a few more days.
but there are lots of people who are not that fortunate.
and to those over-competors who are already done with the techtree... well, you not only have scouted too far, you have researched too far too. ;-)
may I add a few suggestions for future events?
complete a chapter
build a city expansion // earn a province city expansion // earn a research city expansion // buy a diamond city expansion.
lower your mainhall by one level