Why is the South Korean flag the same as that of the Korean Empire?

https://www.quora.com/Why-is-the-South-Korean-flag-the-same-as-that-of-the-Korean-Empire/answer/%E6%A1%91%E7%94%B0-%E5%81%A5%E5%8F%B8-Kuwata-Kenji?prompt_topic_bio=1

The designs of the South Korean flag and the Korean Empire are slightly different.

Taegukgi was designed in 1882 by Pak Yung-hio (Japanese name: Nagaharu Yamazaki 山崎永春).