Slovan's Canadian forward Brendan O'Donnell could have tied the game in the second period but only hit the goal post to go 1-2.
"To be honest I was over the limit today. At the end I gave everything that I had out there, it was an amazing match," the 27-year-old added.
Hao, former assistant coach and technical director of Luneng, will be the club's new head coach.
Moments later, new arrival Joel Pohjanpalo scored his first goal for Union only 35 seconds after coming on to put the result beyond doubt in the 64th minute.
He has also maintained Wolverhampton forward, Adama Traore in his squad, despite the striker, who was born close to Barcelona, also being called up by his parents' homeland, Mali.
"I can't get to sleep last night because I was so excited," The 43-year-old swimming fanatic said. "And I was not the only one - every one of our online group was awake late at night, cheering each other up for today's event."
In the Changzhou division, Tan Long scored a hat trick to propel Changchun Yatai to a 4-1 victory against Xinjiang Tianshan Leopard.
"We had a poor start as our players didn't show enough mentality, but I'm satisfied with the players' performance in the following three quarters," Shaanxi coach Jiang E'Ying commented.
FC Barcelona's positive start under Ronald Koeman had produced two wins and seven goals without reply in their first two matches of the season, but that positive start was halted as they were held 1-1 at home to Sevilla on Sunday evening.
Eibar won for the first time this season as Kevin Rodrigues' 91st minute goal gave it a 2-1 triumph away at Valladolid in a frantic game on Saturday.
MADRID, Oct. 3 (Xinhua) -- Athletic Club Bilbao have agreed a deal with Italian Serie A side Torino to sign 25-year-old winger Alex Berenguer.