China is giving shelter to more than 3,000 people who have fled Myanmar after fighting between the government and rebels.
The government and state media of China also said, stray shells have fallen inside China causing minor damage but no deaths.
Chinese Foreign Ministry spokesman Geng Shuang said wounded people among the 3,000 Myanmar citizens were taken to hospital. The refugees are in the southwestern province of Yunnan, which shares a long border with Myanmar, reports Reuters.
"We strongly hope that both sides involved in the clash exercise restraint," Geng told a daily briefing.
He urged both sides to halt military action immediately, avoid escalation and take effective steps so that the border region returns to peace as soon as possible.
"China is willing to keep playing a constructive role in Myanmar's internal peace process, in accordance with Myanmar's wishes," he added.
China hopes those who have fled can return to Myanmar as soon as the fighting ends, Geng said.
Stray shells have fallen in Wanding, an important border crossing, causing some minor damage, state television said.
The Global Times newspaper also said a Chinese government building in Wanding had been lightly damaged.
Only one Chinese resident had been wounded, and fighting on the Myanmar side had subsided, Geng said.
The sudden escalation of fighting comes as the Myanmar government grapples with a conflict in northwestern Rakhine that has sent hundreds of Rohingya Muslims fleeing to Bangladesh, posing a new challenge to Nobel peace prize winner Suu Kyi, who swept to power last year on promises of national reconciliation.
Previous fighting along the border pushed thousands of people into China. China was infuriated last year when five Chinese people were killed after fighting spilled into its territory. –RH