The visitors' efforts eventually paid off with 67 minutes gone as Hwang had sufficient space on the wing and squared to Poulsen, who made no mistake to double the lead with a well-placed shot into the top left corner.
Dominic Calvin-Lewin's 55th minute header gave Everton a deserved three points after they controlled Tottenham for most of the game and Ancelotti deserves credit for handing debuts to summer signings, Abdoulaye Doucoure, Allan and James Rodriguez, who enjoyed an impressive first appearance in the Premier League, creating five chances for their side.
Before the final whistle, both sides created and missed sorts of chances that could turn one point into three.
After the half time, the "Herthaner" came out with their guns blazing whereas Braunschweig kept eleven men behind the ball to protect the lead.
Athletic's pre-season has been hampered by six players testing positive for COVID-19 and injuries to others such as Yuri Berchiche, Inigo Martinez and Mikel Vesga and coach Gaizka Garitano could give minutes to impressive youngsters Unai Vencedor and Jon Morcilla, while COVID-19 also deprives Granada of veteran signing Jorge Molina.
Jena grew into the game as the clock ticked and created a chance of their own with 21 minutes gone as Maximilian Oesterhelweg tested Bremen's goalkeeper Jiri Pavlenka.
Even though it is only the first game of the campaign, both teams will be desperate to kick off with three points.
"From the perspective of a 90-minute game, it is reasonable for Guoan to seal the victory. I still want to praise all the team members because they showed high morale on the pitch," said Teda head coach Wang Baoshan.
Two-time Grand Slam winner Azarenka seemed headed for an agonizing loss after being hammered 6-1 by Williams in the first set, but the 31-year-old turned the tide, raising up her level and reducing the unforced errors before securing the 1-6, 6-3, 6-3 victory.
Ruichang Biyuan edged Jiangsu Weikeduo 4-1 to rank second in the table, while the third-placed Hunan Hualai also enjoyed a convincing victory, beating Anhui Souyu 5-0. Enditem
PP Sports, owned by the Chinese retail giant Suning Group, had signed a three-year deal with the Premier League in 2016. The broadcaster has reportedly withheld a payment of 160 million pounds for rights fees which were due in March.