Can you give me a specific link of Beijing (i.e.: the official government, not just state media) telling Duterte explicitly to "ignore" or "denounce" the ruling?
You're the one making the claim here, so I'd appreciate if you could provide the evidence instead of asking me to find it myself.
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I think you need to calm down a little bit. No one is being "excited" just because Duterte's offered direct negotiations. But some of his recent statements are still pretty encouraging, such as Duterte saying he isn't interested in taunting or flaunting the court's decision:
Did China actually say to Duterte to denounce the court and its decision?
The truth of the matter is that Duterte is the most open and friendliest head of state of the Philippines China has seen in a while, and it would be stupid for China to make massive demands of Duterte so early. So I think you need to calm your horses a bit.