Advice from Anyone that has got this 144Hr TWOV

According to the procedure that was received
4.Q: What are the procedures an eligible foreign passenger needs to undergo to apply for 144-hour visa-exemption transit?
A: An eligible foreign passenger, while going through check-in procedures from abroad to travel to Shanghai or Lukou International Airport in Nanjing or Xiaoshan International Airport in Hangzhou by air / vessel / train, needs only to produce his / her own valid international travel document and onward air / vessel / train ticket to a third country (region) with confirmed date and seat to the carrier’s agent, and the carrier in turn will submit the passenger’ information to the corresponding immigration inspection station in China for examination. Once the latter confirms the passenger’ qualification, it will process the passenger’s application for 144-hour transit permit-exemption upon his / her arrival.

Does this mean that we have to do anything BEFORE we depart as our carrier ( Cathay Pacific ) say that they are not involved at all