Researchers led by Ph.D. candidate Zang Lei and Prof. Qian Shengbang from Yunnan Observatories of the Chinese Academy of Sciences (CAS) have discovered that the orbital period of the persistent supersoft X-ray source QR Andromeda (QR And) is continuously increasing. The orbital evolution of QR And is mainly caused by the mass transfer from the low-mass companion to the white dwarf on its Kelvin–Helmholtz timescale.