Rio hopes to open a channel between the team leading the fight against the COVID-19 pneumonia in Shenyang and the medical team in Braga, so they can from Shenyang's experience in managing the crisis.

He also wanted to buy protective equipment and ventilators from companies in Shenyang as soon as possible.

"Despite the shortage of protective equipment in Shenyang, we will donate 10,000 masks and 500 protective suits to Braga," Jiang said in his letter of reply. "We are willing to provide all the support and assistance we can for your city."