Manchester United began the post-Jose Mourinho era with an emphatic 5-1 win over Cardiff City on Saturday. In what was Ole Gunnar Solskjaer’s first game in charge since being named as interim manager, the Red Devils rolled back the years with a scintillating performance against Neil Warnock’s side.United lined up in an attacking 4-3-3 formation, featuring the likes of Ander Herrera, Paul Pogba, Anthony Martial and Marcus Rashford. The Red Devils needed just three minutes to open the scoring – Rashford netting from a deflected free-kick.United doubled their lead midway through the first-half with Herrera’s long-range shot flying into the top right corner. Cardiff, however, made it 2-1 in the 38th minute when Camarasa scored from a penalty after Rashford handled the ball in the United box.But there was more action before the break as Martial combined with Pogba and Lingard to score a perfect team goal. The Frenchman played a quick one-two with Pogba; interchanged another pass with Lingard, before firing a low shot to make it 3-1.Man United returned to the second half very much on the ascendancy and went 4-1 up after a contentious penalty was awarded when Lingard fell in the Cardiff area. The England international stepped up and duly converted. Lingard later added a fifth to wrap up an emphatic win for Solskjaer's side.It was indeed a comprehensive win for Man United and Solskjar, especially following the negativity that surrounded the club during Mourinho’s tenure. This looks like a new era and the performance was reminiscent of what the great Sir Alex Ferguson made the Red Devils faithful accustomed to.The 4-1 win and the performance of the Man United players has since erupted Twitter into a frenzy. Many football fans have wasted little time in having their say on the game.Here are some of the best tweets:How I’m watching the Man Utd players. 🤐 pic.twitter.com/16nqdoLhYO— Juliet Bawuah (@julietbawuah) December 22, 2018Man Utd with Mourinho vs Man Utd without Mourinho pic.twitter.com/Dub2gvfqDo— Footy Humour (@FootyHumour) December 22, 2018First time Man Utd have scored 5 goals in one game, since the days of Sir Alex Ferguson! Brilliant from solskjaer! Man Utd sign him up on that long term contract right now!!!!👀— Jermaine Jenas (@jjenas8) December 22, 2018Every Man Utd fan watching the full time whistle like #CARMUN pic.twitter.com/etRpZ2uLdH— BenchWarmers (@BeWarmers) December 22, 2018Man Utd fans celebrating Man City losing but then realising Liverpool are now closer to winning the Premier League pic.twitter.com/uWM01fDY68— Footy Humour (@FootyHumour) December 22, 2018When you realise it’s the first time since November 2017 that Man Utd have scored 3 first-half away goals pic.twitter.com/SnunootFt1— ODDSbible (@ODDSbible) December 22, 2018Woke up this morning Phelan fine,Got Man United on my mind, Solskjaer’s playing the way that United shouldOh yeaaaah!Something tells me I’m into something good!🇾🇪🇾🇪🇾🇪🇾🇪 #mufc pic.twitter.com/PoLk1pcZ6h— United Xtra (@utdxtra) December 22, 2018Martial.This is Manchester United .This is how we are supposed to play— Godfred Akoto Boafo (@eastsportsman) December 22, 2018When Man Utd fans see Rashford, Martial & Pogba all starting. #CARMUN pic.twitter.com/sNks7HWXt2— betclever (@bet_clever) December 22, 2018FT: Cardiff 1-5 Man United Rashford goalMartial goal Lingard goal x2 and was everywherePogba 3 assists Herrera bangerOne touch footballEveryone’s feeling goodFirst time Scoring 5 goals since SAFNew era begins now i actually don’t care🤷🏾‍♂️❤️ pic.twitter.com/yuao7baa9q— Tяυsτ №¹-Yahya™ (@RealistYahz) December 22, 2018Oh no! Where are we going to hide from Man United fans this week 😏 @SirAlexas was already insufferable on #TheScoreKE Now 5-1 SMH— Carol Radull (@CarolRadull) December 22, 2018They said Man United never spanked teams when Mourinho was the coach.Mourinho in the season United finished 2nd:4-0 vs West Ham4-0 vs Swansea4-0 vs Everton4-0 vs Crystal Palace 4-1 vs Newcastle 4-2 vs WatfordBut Mourinho is a useless coach with only defensive tactics😊— Olaleye Dada (@olaleyedada) December 22, 2018