A Chinese envoy has lobbied Southeast Asian nations to let Myanmar's military ruler attend a regional summit being hosted by China's president next week but has met stiff opposition, diplomatic sources said on Thursday.

Myanmar's standing as a member of the 10-country Association of Southeast Asian Nations (Asean) has been thrown into the spotlight by a Feb 1 coup, when its military ousted the elected government of Nobel laureate Aung San Suu Kyi, sparking bloody turmoil.