Alright can I get a hint - because I'm that close to clearing all the maps before going after Eigong. There's a hall in the Empyrean district with bells similar to the ones at Yaochi ruins. I'm guessing if you ring the bells in the right order the entrance will open - but the bells have no markings on them, and trying to ring them in order of the bells at Yaochi had no effect.The final three collectibles are probably inside the entranceWhere do I look for hint on how to ring these bells?