Blues boss Dai Young knows that the hard work his side have put in since their painful defeat to Toulouse last year has paid off.
The Blues boss watched nervously from the Millennium Stadium touchline as his troops dug deep to complete a nine-six win over the most decorated side in European rugby history.
But nerves were gone in the post match press conference, and young hailed his growing team. "The players have improved game on game, season on season.
"We have been moving forward over the past two-to three years and its al culminated in this result.
"It was a great day both on and off the field. We made life difficult for ourselves but we got the result, and a place in the semi-final
Not only have the Blues impressed on the park, they have impressed off it. A second trip to the Millennium Stadium awaits them, and, in light of the record home crowd of 36,728 they pulled for today's game, Young and co. won't be too worried about rattling around in one of the largest stadium's around.
And the coach paid tribute to the progress his side have made. He said; "For a Welsh team attendance to day is a great measure on how far the team has come in the past few years a measure of interest
"From the regions' point of view it's a great day and a great experience."
WRU International Skills Coach Jason Strange is a busy man, combining the new role with that of Wales Under 20 attack coach, Ebbw Vale head coach and continuing to teach at Ebbw Fawr Learning Community.
Warren Gatland and Sam Warburton look ahead to this week's crunch RBS 6 Nations tie against France, where the Wales skipper in particular is keen to make his mark, as Paris has proved a bleak place for him in the past.
Following their historic win over England, Wales Under 20 suffered a narrow, 36-34 loss to their Scottish counterparts last weekend, despite outscoring them by five tries to three. Watch the match highlights and reaction.
WRU TV go behind the scenes with the Wales squad as they put the final touches in place ahead of the clash against Scotland at Murrayfield. Follow the squad on their captain's run, the kickers visit to Murrayfield and Neil Jenkins' press conference