Is China trying use the COC to beef up its Article 281 defence?

Besides ‘we do not accept,’ another legal argument China used to argue that the Philippines case before An Arbitral Tribunal under Annex VII of UNCLOS was inadmissible was that the 2002 Declaration on the Conduct of Parties (DOC) in the South China Sea prevented arbitration as per UNCLOS Article 281. This article states that if states …