Jiankang is in the southeast of Luoyang, and Liu Jun is rapidly attacking Mianchi (northwest of Luoyang). Before hitting Luoyang, the surrounding area had been swept out, and the soldiers had reached Runan in Yingchuan, which was already in the southeast of Luoyang. As the ship was burned and the waterway was blocked, Sima Chi had to run west to Chang 'an, but failed.
Should also be 8 jin j forces and intelligence are exhausted, otherwise it won't be besieged.