In order to get the Rooster Jade Base, we need to do 2 things during the Lunar New Year 2017 event.
1. Obtain the Rooster Lunar Lantern by capturing the Costumed Rooster Mouse!
For the details on how to capture this mouse, please check this out: Lunar New Year 2017 Event Guide
2. Collect and light 10 Lunar Lantern Candle
Do not forget to lit the candles after getting the lantern. You can only lit the candle once you have obtained the lantern above.
To check your current progress, you can check your Adventure book in the game.