Dangerous! My Chuwi Minibook battery suddenly expand bigger

Hello chuwi team, I’ve been using minibook a year but rarely using it for work due to strong noise fans issue, but recently I check my minibook got abit bumb from the back and I open it the cover just to see the battery seem to be bigger than usual. Please help

view more photo: https://imgur.com/a/kry8mhQ

Battery life is over. Replace the battery. The forum also shows how to replace the battery.