The Japanese resumed their advance from Miaoli on 24 August, occupying the large village of Koloton on 24 August. On 25 August, continuing their advance towards the Toa-to-kei river to the north of Changhua, the Japanese were ambushed by a large insurgent force in the fortified village of Tokabio. The Japanese fought all day to clear the insurgents from their line of advance, but the village was not completely cleared until the morning of 26 August. During the evening of 26 August the Japanese closed up to the Toa-to-kei river and prepared to assault the Formosan positions around Changhua.