According to the latest local news report, much of the park's main steel structure and infrastructure will be completed this year. Most of the ride installation will take place in 2020. In addition there's an onsite nursery for foliage that will eventually be used as the park's landscaping and by May of this year the entire nursery will be operational with more than 2,600 shrubs and trees.
Source: http://www.bj.xinhuanet.com/bjyw/2019-03/29/c_1124298744.htm