Yuezhi - anyone figure how to trigger?

[KuKulzA]

so has anyone figure how to trigger the Yuezhi?
and how do you do it?

[Malik of Sindh]

; The Yuezhi Invasion occurs unconditionally in 172 BC. However, the Yuezhi
; will be very passive unless the player controls the Saka (pontus), the
; Sauromatae (armenia), Baktria (romans_brutii), the Pahlava (parthia), or
; the Arche Seleukeia (romans_julii) AND his faction controls Chighu. For an
; active invasion, we also need a faction to temporarily take control of Chighu.
; This faction ought to be located far away from the east end of the map, since
; transfer of control away from a faction may have negative effects on the AI's
; handling of that faction. These are the Casse (britons), Lusotana (spain), and
; the Qarthadastim (egypt).
;
; So, the Yuezhi will be active if
; (1) The player is pontus, armenia, romans_brutii, romans_scipii, parthia
; (2) He controls Chighu,
; (3) At least one of these factions still exists: spain, britons, egypt.

Copied from MAA's post in TWC

[johhny-turbo]

I know that changing settlement names has ill effects but does anyone else feel like changing Chigu to Cadia?

[Frodge]

heheh

[Jurdagat]

Anyone got a screenie of a Yuezhi invasion yet? :)
With stacks and possibly units.

[Bactron]

That is interesting. I didn't knew this. I will reach that year, probably this week. I am playing as Baktria and the year is 198 BC.

So do I need to own Chigu or not? To make sure that Yuhezi will appear and will be active. Because at this point Gava and Chigu still belongs to eleuthori. So I probably should make some expedition into that teritory.