Baek Sungja, Ryu Seoyeon, Lee Nayoung and debutants, Han Byul, Kim Hyun Mi and Lee Yeonji started off the second block with 1355 but had their first block lead of 73 pins reduced drastically to just 15 pins.
Malaysia's Esther Cheah, Syaidatul Afifah, Natasha Roslan, Sin Li Jane, Siti Safiyah Amirah and 2017 SEA Games Masters gold medallist, Shalin Zulkifli added an impressive 1407 to reduce the deficit and to stay in second position.
Chinese Taipei's Chang Yu-Hsuan. Pan Yu-Fen, Chou Chia-Chen, Huang Chiung-Yao and Wang Ya-Ting struggled in the medium oil pattern with 1267 but remained in a distant third. Philippines, Indonesia and Japan were the other teams closely bunched up together from fourth to sixth.
Korea pulled away from their closest rival after a stunning 1494 in the fifth game. Although Malaysia knocked down a respectable 1336, they found themselves 173 pins behind the leader. The Taiwanese recovered with 1343 to move closer to the Malaysians.