The Philippines has said China should respect an international tribunal's rejection of its claims in the South China Sea.
In a statement, it said Foreign Affairs Secretary Perfecto Yasay would raise the issue at a major two-day Asia-Europe summit starting on Friday, attended by China's Premier Li Keqiang.
A UN-backed tribunal ruled on Tuesday that there was no legal basis to China's claims in the South China Sea.
China has vowed to ignore the ruling.
It says the panel has no jurisdiction and its activities in the region will not be affected.
The Asia-Europe Meeting Summit (Asem) in Ulaanbaatar in Mongolia on Friday and Saturday will be the first major multilateral diplomatic gathering since the 12 July ruling over the South China Sea.