Raki Nala is in the dispute zone and its the concrete structure put up by India. If this structure indeed is there, it should be removed to show good faith for both sides to deescalate as its in the dispute area.
nobody knows deep details .. but indian infra build up is commonly believed to be much milder than china's.
infact, india built up only in response to china's actions.
china should understand that india is fully able to match anything it does. force will not help them at all.
negotiations is the only way forward.