Can I not pay the property fee if I don't demolish the building illegally?

Did you do it illegally, or other owners?

Yours, in the case of illegal decoration, has added two illegal acts: breach of contract and non-payment of property fees.

Although other people's property infringes on your rights and interests, the property has no law enforcement power and no right to demolish it. This is a matter for national institutions like urban management. You have no right to indulge your illegal behavior because others don't abide by laws and regulations.

To sum up, no.