Men who said they had been fighting Myanmar government troops in fierce battles over recent days streamed into China on Sunday.
They said their long-autonomous enclave had fallen and its future was in doubt.
The clusters of men, weary and sometimes clutching a few belongings, described widespread bloodshed in the Kokang ethnic enclave in northeast Myanmar after government troops moved in, seeking to dislodge local rulers and their militia who have long controlled this mountainous terrain next to China.
Some said the Kokang militia had been decisively defeated, a turn that will present Myanmar and China with tricky choices on how to govern the enclave and deal with the tens of thousands of residents who have fled to neighbouring Yunnan province in China.
"The Kokang army has collapsed. We're all on the run," said Chen Bo, a refugee who arrived from Myanmar at the Chinese border town of Nansan on Sunday.
Chen said he was a Chinese national who had been fighting for the Kokang forces for money. He pulled up his shirt to show what appeared to be a bullet graze on his deeply tanned back.
"People may return to Kokang, but there'll have to be the right conditions, there'll have to be negotiations so we feel safe," said Chen, a rake-thin man in his thirties.
"The Myanmar army had too much strength and won, but running Kokang is very difficult."
Many of the fleeing men said they escaped on Saturday after the latest spasm of gunfights in Kokang, joining the many refugees in Nansan and other refugee collection points in Yunnan.
Kokang has long served as a freewheeling buffer zone between China and Myanmar, and drug trafficking and gambling have long underpinned the enclave's economy. Most of its predominantly ethnic Chinese residents can speak Mandarin.
"We're soldiers from the Kokang army. But we had to give up. The fighting was too much," said Xiong Zhaole, walking, head bowed, with about six other men along a muddy mountain road near a border crossing. "We were trying to defend our people, but the Myanmar troops were pushing us back."
Xiong said he and his companions had been told by Chinese soldiers who received them at the border to swap their army greens for blue outfits, abandon any plans to fight and find somewhere to stay with relatives or in refugee camps.
The battle erupted after the Myanmar military moved into the area as part of efforts to ensure ethnic groups participate in elections next year, according to reports by Chinese media and Myanmar exile groups.
One of those groups, the U.S. Campaign for Burma, said in a statement early on Sunday that about 700 troops from the Kokang militia had fled to China and surrendered their weapons.
China is one of neighbour Myanmar's few diplomatic backers.
But the many thousands of refugees highlight the brittle balance Beijing has sought between working with the Myanmar government and accommodating the forces who have long run Kokang.
"I think ultimately the future of Kokang will have to be solved through negotiations, not war," He Shengda, an expert on Myanmar at the Yunnan Academy of Social Sciences, told Reuters.
He cited the example of a 1989 ceasefire agreement over control of the enclave.
"If the fighting continues, this could damage the stability of other, bigger border regions in Myanmar, and we certainly don't want to see that."
China's official Xinhua news agency reported that Myanmar had "apologized for Chinese casualties" in the fighting. The report also said refugees had begun to return from China to Myanmar on Sunday after fighting died down.
Last Mod: 30 Ağustos 2009, 16:07