In 393 CE, the Chinese recorded the appearance of another
"guest star",
SN 393, in the modern constellation of
Scorpius.
[5] Additional unconfirmed supernovae events may have been observed in 369 CE, 386 CE, 437 CE, 827 CE and 902 CE.
[1] However these have not yet been associated with a supernova remnant, and so they remain only candidates. Over a span of about 2,000 years, Chinese astronomers recorded a total of twenty such candidate events, including later explosions noted by Islamic, European, and possibly Indian and other observers.
[1][6]