Hainiu wins against Chang'an, closing the gap for promotion.

As of now, it is difficult to predict which team will win against Chang'an and who will advance to the top flight of Chinese football. However, based on recent performances and results, we can make some educated guesses.

In the past few seasons, Hainiu has struggled to establish itself as a top-tier club in China's professional leagues. Despite their success in local competitions, they have not been able to compete with more established clubs like Chang'an or Guangzhou Evergrande. This lack of performance may be due to various factors such as lack of investment, limited resources, or poor management.

On the other hand, Chang'an has shown great promise in recent years. They have consistently performed well at all levels of Chinese football, including domestic leagues and international tournaments. Their strong foundation and experience have made them a formidable opponent for any potential opponents.

The two teams have faced each other several times in recent years, but so far, neither side has emerged victorious. It remains to be seen whether Hainiu will be able to secure a victory over Chang'an in this upcoming match. If they do manage to do so, it would likely set up a tough battle for the top spot in the league table.

In conclusion, while it is impossible to say definitively which team will win against Chang'an, both Hainiu and Chang'an have significant potential. The key will be for both teams to perform at their best and work together towards achieving their goals. Only time will tell if either team will emerge victorious in this upcoming match.