not able to play china rising on ps4

You need to download the China Rising DLC again from PSN Store. It may tell you that you need to pay $ 14.99 but it would not charge you.

Here is official EA response: https://help.ea.com/article/troubleshooting-steps-for-china-rising-downloading-and-installation-issues

PlayStation Players: If you're having issues accessing your China Rising content--you are told to purchase China Rising again while being a Premium member, or you're trying to access your content for the first time--you may be able to download China Rising with the following steps.

If you've entered your China Rising Battlefield 4 expansion code on PlayStation 4, but Battlefield 4 is still asking you to purchase China Rising, you may be able to download your content with these steps:
Please note these steps will only work for those players who've played or are trying to play China Rising on the PlayStation 4 exclusively.

Exit Battlefield 4 to the PlayStation 4 home screen

Head to the Sony PlayStation Network Store

Select Games, then Battlefield 4

Under Add-ons, select China Rising

You should be prompted to buy the expansion for 14.99, however the "Game Pack" box under "Choose a Version" is a drop down menu.

Open up the menu with the X button, and scroll down and select the next game pack, which should be available to you, if everything is in order, as free.

You should now be able to download your China Rising content appropriately.

If this message helped you or direct you to the right direction, just click the XP box at the bottom right of the message.

XP = Thanks for helping.
Accept as solution = This solved my problem!