As of 11 am on Sunday, 13 Chinese nationals in Myanmar have been found injured in the earthquake, an official with the Chinese Embassy in Myanmar told the Global Times.

When asked to update on the Chinese rescue teams to the quake-stricken areas in Myanmar, an official with the Department of Press, Communication and Public Diplomacy of the embassy said three government-dispatched rescue teams had already arrived in the country.

The first to arrive in Myanmar was the rescue team from Southwest China's Yunnan Province, which reached Yangon Saturday morning. They have since arrived in Nay Pyi Taw and begun rescue operations, successfully rescuing a survivor at 4:56 am on Sunday.

There are also civilian recue forces rushing to provide aid, the embassy official said.

The team from Yunnan, joined by Myanmar's rescue forces, retrieved an elderly man in earthquake-hit Myanmar capital Nay Pyi Taw, Xinhua News Agency reported.

The man had been trapped for nearly 40 hours under the rubbles of a hospital in Nay Pyi Taw. After an overnight emergency rescue, it was the first person rescued by the Chinese rescuers, the report said.

On Saturday night, a rescue team, which was dispatched by the Hong Kong Special Administrative Region, also arrived in Yangon and is now heading to the disaster area, the Embassy official revealed. Another rescue team from China that has arrived in Yangon on Saturday afternoon has been traveling overnight to the Mandalay disaster zone and is still en route.

A total of 1,644 people died, 3,408 were injured, and 139 remained missing in the powerful earthquake in Myanmar, according to the Information Team of the State Administration Council of Myanmar on Saturday night, Xinhua reported.

The 7.9-magnitude earthquake hit the Southeast Asian country on Friday, with Mandalay, Bago, Magway, the northeastern Shan state, Sagaing, and Nay Pyi Taw among the hardest-hit regions.