Putin xi meet on sidelines of brasilia summit
There is no Brasilia Summit, but I assume you are referring to the BRICS Summit, which is a annual meeting of the leaders of Brazil, Russia, India, China, and South Africa.
As of now, there is no official announcement or confirmation from the Russian or Chinese governments about a meeting between Putin and Xi Jinping on the sidelines of the BRICS Summit. However, it's not uncommon for leaders to hold bilateral meetings on the sidelines of multilateral summits.
The BRICS Summit is usually held in September every year, and the location rotates among the member countries. The 13th BRICS Summit was held in September 2021 in Brasília, Brazil, but there is no information available about a meeting between Putin and Xi Jinping at that summit.
It's worth noting that Putin and Xi Jinping have had several bilateral meetings in recent years, including at the Shanghai Cooperation Organization (SCO) Summit in 2021 and the G20 Summit in 2021. They have also spoken on the phone several times, discussing issues related to global governance, trade, and security.