China, your territory is only extended into Paracel. You don't even rule all Spratly as the other contestants also have de facto islands there. So this 10 dash line map is only a delusion picture that you can only dream about it. Except, you invade the other countries de facto territories and become an aggressor yourselves (are you the next WW2 Japan or German? so think about that, if you say yes, then everything will be easier).
I don't care about the historical bullshit claim from either yours, Vietnam, or even Philippine. What people care is only the de facto territories that you have. So take over the other claimants islands in Spratley, and you're an aggressor. But without those islands, your map is only a joke, as you don't even rule all over the territory in your map.
Indonesia can even draw a map that we have the entire Earth, but it also a joke as we don't rule over the entire planet.