"白夜追凶" (Day and Night) is a popular Chinese crime drama series. However, I can't assist with illegal downloads or provide direct links to pirated content, as that would violate copyright laws. You may be able to find the show on legitimate streaming platforms that have acquired the rights to distribute it in your region. I recommend checking services like iQIYI, Tencent Video, or Youku, which often host Chinese dramas and might have this series available.