Liverpool Ladies of the top division of the Women's Super League proved too strong for the Green Army at Oaklands Park, but, cheered on by a crowd of more than 1,000 at Oaklands Park, Chi made them battle all the way.
For half an hour it was hard to tell who were the higher-placed team as Matt Wright's team matched their visitors. But two goals in five minutes from Rinsola Babajide and Ashley Hodson put the Reds in charge before half-time.
When they added a third early in the second half through Bethany England some might have worried how many Chi were going to lose by - but they dug in well and helped by some superlative saves by Sadie Wilson-Blakely they kept Liverpool from scoring again, and got forward for some chances of their own.
So it's Liverpool who go through to the last eight - while Chi can look back with pride on a run that ended in the biggest game in their history to date.
Well done Chi City Ladies ... you have done the city proud!
(Full match report and more coverage to follow)