As hundreds remain dead or missing following massive floods and landslides that struck Nepal and China's Tibet Autonomous Region, survivors continue to share harrowing accounts of the disaster.

According to Reuters on the 27th (local time), Bibek Kumar, a 24-year-old resident of the Rasuwa district in central-northern Nepal, heard a hissing sound the previous day while digging a toilet pit outside a newly built house.

It was the roaring sound of rushing water, mud, and rocks cascading down as a giant wall.

Four colleagues shouted at Kumar, who was working inside the 1.5-meter-deep pit, to get out and run. By the time he hurriedly climbed out of the pit, his colleagues had already evacuated.

"I started running," Kumar said. "Then, a giant wall of water came crashing down with a roar, as if an earthquake had struck."

However, swept downstream by the torrential current, Kumar recalled, "Luckily, I was caught by a mango tree and stopped. If it weren't for the mango tree, I would have been swept away and lost my life."

Having survived the massive Nepal earthquake in 2015 as a teenager, which claimed about 9,000 lives, Kumar was able to preserve his life this time thanks to a single tree.

Clinging to the tree while watching the house he was working on get swept away and disappear, Kumar was later rescued by police.

He has been transferred to the National Trauma Center in the capital, Kathmandu, for treatment.

Rihana Lamichhane, an 11-year-old girl receiving treatment in the bed opposite Kumar, said, "I was at school when we were told that school was closed because of that thing (the flood) and to go home. As I was crossing the river, floodwaters suddenly came rushing down."

Sustaining injuries to her chest and legs, she added, "I am glad to be safe, but I have no idea what happened to my friends."

Lamichhane's mother, Rita, who rushed to find her daughter after receiving a call from a friend, said, "I am glad nothing major happened to my daughter. I was relieved to find out she was safe."

Keshab Prasad Baral, 68, who was being treated at a different hospital, recounted, "A massive pile of mud came rushing straight toward us. The higher it got as it approached, the taller it grew. Seeing the mud rush into the house, I grabbed my wife's hand and tried to escape to the terrace. But my wife was swept away by the mud."

Expressing his sorrow, Baral said, "A helicopter came and rescued me 4 to 5 hours later. My wife is still somewhere beneath the piles of mud. My wife is gone."

Meanwhile, according to Hong Kong's Sing Tao Daily and other reports, a Chinese national surnamed Pang was driving from China toward Nepal with family and acquaintances in a car that same morning.

Around 10:00 AM, when they reached a point about 4 kilometers away from the China-Nepal border checkpoint, a massive wave of muddy water suddenly surged from ahead.

"All the trees and utility poles in front of us were knocked down, and a massive flood was rushing toward us," Pang recalled of the situation. "Without even time to turn the car around, I just kept reversing."

He continued to reverse while waving at a car following behind to warn them not to move forward.

"It was only after backing up about 3 kilometers that the current became less fierce," he said.

Pang noted that a communication facility restoration vehicle went ahead but eventually turned back, and dense fog subsequently rolled in, making it impossible to see the surroundings properly.

Although he narrowly avoided a major accident, he stated that he was unable to get in touch with friends in Gyirong County, Xigaze, Tibet Autonomous Region, where the landslide occurred.

The death toll from the previous day's massive flood has risen to at least 160 as of today, including 157 in Nepal and 3 in China.

Confirmed missing persons have reached 484 in Nepal and 558 in China, raising concerns that the scale of casualties will continue to grow.