Reigning champions Slovan Bratislava managed to overcome its biggest rival Trnava 2-0, and sit six points behind unbeaten Dunajska Streda with one game in hand.
In the men's quarterfinals, second seed Dominic Thiem of Austria eased past Australian player Alex De Minaur 6-1, 6-2, 6-4 while third seed Daniil Medvedev of Russia defeated compatriot Andrey Rublev 7-6(6), 6-3, 7-6(5).
According to public information, smart gyms have already been on trial and have spread in many areas in China such as in Beijing, Chongqing, Zhejiang and Hunan, since 2015.
"I knew to keep calm and wait for the right gap to open - and it did, quite late."
Jack Harrison drew Leeds level after 12 minutes on a pass from Kalvin Phillips, but Virgil van Dijk's powerful header in the 21st minute from an Andy Robertson cross following a corner put Liverpool back in front.
Guoan broke the deadlock in the 30th minute as the ball fell for Zhang Yuning after a series of ricochets, who turned around and finished with a low-strike.
Liverpool began to push Leeds back but the newcomers were holding on until new signing James Rodrigo committed a needless penalty to allow Salah to seal a thrilling win and complete his hat-trick.
Internacional are now three points clear of second-placed Flamengo with six wins, two draws and one defeat.
The 30-year-old came off the bench in the 67th minute and rifled home a low 35-yard free-kick in stoppage time as the hosts secured a barely-deserved point at their Vila Belmiro stadium.
Faced with unprecedented challenges from the COVID-19 pandemic, the Hangzhou Asian Games Organizing Committee (HAGOC) established a special panel to coordinate the supply of materials with relevant departments, as well as identify and solve technical problems with contractors.
In the constructors' standings, Mercedes remain well out in front on 325 point, with Red Bull second on 173 and McLaren third on 106.