White Sun, or Bai Hu (the White Tiger of the West), is the central star of the 'Verse. Around this star orbits the Core planets, also known as the White Sun system, as well as the four additional stars that make up the stellar cluster: Huang Long, Zhu Que, Xuan Wu, and Qing Long.
White Sun was a high-magnitude, A-class star. Due to its immense mass (approx. 40 solar masses), it appears to be a relatively young star. The other stars orbiting it have the same attributes of main sequence stars, but must also therefore be young.
The surface temperature of White Sun is at the upper limit of A-class stars, around 10,000 Kelvin. The nearest planets orbit at a considerable distance, enabling them to support life (after terraforming).