Firmino scored twice as Brazil opened their South American Football Confederation (CONMEBOL) qualifying campaign with a 5-0 rout of Bolivia in Sao Paulo on Friday. Peru drew 2-2 in their first match against Paraguay in Asuncion on Thursday.
Questions about Loew's future are popping up, and concerns about the outcome of next year's European Championship are growing.
Elsewhere, former Changchun Yatai forward Marinho converted two penalties as Santos upset Gremio 2-1 at home. Diego Souza was on target for the visitors.
In the 76th minute, Lyu Yueyun received a pass and rifled into the net, securing the 4-0 victory for Wuhan.
Scotland is leading Group 2 of League B with seven points, the Czechs have six in second place, Israel has two in third.
The Brazil boss also showed satisfaction with the performances of goalscorers Marquinhos, Philippe Coutinho and Roberto Firmino.
The Black Stars, who top their group will meet Sudan in a doubleheader AFCON qualification with the first leg in the Ghanaian town of Cape Coast and the return encounter in Khartoum, Sudan.
The former leader of Changzhou Division, Kunshan FC, lost to Heilongjiang Lava Spring on Wednesday, which gave Yatai and Nantong a chance to lead.
Loew seems trapped between a risky strategy as further disappointments increase annoyance and the effects of the COVID-19 pandemic. Time tables deliver worthless friendlies aside of the Nations League.
"I had already won a medal in Rio, so I am not going to be under pressure in Tokyo."
With the same three wins and one loss, both Beijing and Shanghai surpassed Inner Mongolia, which has won all its three games so far, ranking fourth and fifth respectively in the tables after the league's fourth round was over.