RIO DE JANEIRO, Jan. 16 (Xinhua) -- Brazil's President Jair Bolsonaro met with visiting Argentinian President Mauricio Macri on Wednesday in the capital Brasilia to discuss bilateral relations and regional affairs.

The two leaders met privately, and Bolsonaro later said via Twitter the meeting offered a great opportunity to improve relations between the neighboring countries. He added he wants to build a better business environment.

They talked about modernizing the South American trade bloc Mercosur (Southern Common Market) and making it more efficient. They also discussed cooperation in combating organized crime.

"We are confident of the modernization of Mercosur, both in its internal improvement and the expansion of its relations with the world," Bolsonaro said.

"I am confident that today we started to write a new chapter in Brazil-Argentina ties," he added.