Can't complete allied campaign mission-turning point

[xdzero]

i think it is called turning point, i'm guessing since my mow version is on chinese, i've came across a problem when i finnished defending both the north side and east side of my position, they gave me a new objectiveL to destroy the last remnants of the german army as well as destroying the german mortars/arty. i wrecked both but still doesn't give me the next mission to go ahead,

any advice about what i'm supposed to do exactly will be of great help, thank you