<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31377133</termId><termName>ondols</termName><termType>PT</termType><termNote><![CDATA[ Korean heating systems employing warm air chambers or ducts beneath the floor; similar to Roman hypocausts. ]]></termNote><termCreatedDate>2026-03-30 20:41:43</termCreatedDate><relation><relationType>UF</relationType><termId>31377134</termId><termName>on-dol</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31377135</termId><termName>on-dols</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31377136</termId><termName>ondol</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31377137</termId><termName>ontols</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31346572</termId><termName>warm air heating</termName><termType>PT</termType></relation></term>  </Zthes>