`` At present , the number of escorting ships of China has reached 60 , including military ships , '' NEW : Vietnamese take to the streets to protest against perceived territorial incursions by Philippines . NEW : the South China Sea disputes form backdrop to National Boundary Commission summit in Philippines . Vietnam says Chinese ships have made violent attacks on Chinese vessels . Chinese fishermen arrested by Philippines authorities in a separate dispute .
NEW : Vietnamese take to the streets to protest against perceived territorial incursions by Philippines . NEW : the South China Sea disputes form backdrop to National Boundary Commission summit in Philippines . Vietnam says Chinese ships have made violent attacks on Chinese vessels . Chinese fishermen arrested by Philippines authorities in a separate dispute .