It was so hot in Seoul, South Korea, last Wednesday that the players involved in Manchester City’s friendly with the K-League All Stars could barely breathe.Towards half-time, City left-back Josko Gvardiol had to lean on team-mate Gianluigi Donnarumma for support, and it turned out he was suffering from blurred vision. Marcus Bettinelli, who replaced Donnarumma in goal for the second half and has admittedly not played a minute of football since joining the club last summer, said he was out of breath just from yelling at his defenders.“The heat was unbearable,” Bettinelli said. “I was shouting instructions and stuff, and it was taking me four or five times to get my breath back, so it was really hard. I don’t know how the (outfield) boys managed to do it, because I was stood still, so a massive credit to the lads.”The ‘feels like’ temperature was 45C (113F) at 8pm local time, and it was hard enough to sit in the stands and watch that match, let alone play it. Severe heat alerts buzzed on mobile phones every few hours throughout the week City spent in South Korea, but mercifully the temperatures dropped somewhat for their tour’s final fixture, against Atletico Madrid on Sunday.The weather dominated conversations throughout City’s fortnight in Asia; during the first week, in Hong Kong, a thick, dark cloud hung above the city, as it had done for the previous month, and did not shift.Hong Kong is always humid and wet at this time of year, but this summer was different; it rained heavily for 80 per cent of each day while City were there and the ‘felt like’ approached 40C.Somehow, it stopped raining long enough for the launch of their new away kit, which took place at Victoria Harbour and featured a floating football pitch, which had to be repeatedly squeegeed and towelled to avoid any costly slips-ups before City players Phil Foden, Ryan McAidoo and Abdukodir Khusanov stepped onto it.Foden was the star of this tour, with fans shouting his name loudest at events and open training sessions.On the first night in Hong Kong, he took a stroll to see the famous Bruce Lee statue, but was immediately recognised and mobbed by fans. When hundreds of supporters queued outside the fancy Rosewood hotel before the trip’s opening game against Inter, he went out and posed for every picture and signed every autograph — he even signed a dog’s sky-blue coat.In the very first days of City’s time in Hong Kong, a fan asked their new manager Enzo Maresca for his autograph. The only problem was that it was not Maresca at all, but a similar-looking Puma employee wearing club training gear.While the rain was usually relentless, the city’s new Kai Tak Stadium has a roof and air conditioning, meaning preparations for the match against Inter, and the game itself, went perfectly. A City-themed playlist, featuring Oasis, Inspiral Carpets and club anthems, blared out of the venue’s speakers as the players were put through their paces, with Maresca working on his game plan without a care for who was watching.There has been a relaxed feel to Manchester City’s tour under Enzo Maresca (May James/AFP via Getty Images)When the tour moved on to Seoul, City generally had to train in the evening, although temperatures then were rarely any cooler than in the middle of the day. Sessions in the morning were not really an option because players generally struggle to sleep on these trips.Fans benefitted from Maresca putting on full sessions as he looked to get his ideas across to the players, but the simple fact he is the new man in charge has brought notable changes behind the scenes, too.