During Kōminka of the late Japanese colonial period, the Japanese language appeared in every corner of Taiwan. The Second Sino-Japanese War beginning in 1937 brought stricter measures into force, and along with the outlawing of romanized Taiwanese, various publications were prohibited and Confucian-style private schools which taught Classical Chinese with literary Southern Min pronunciation – were closed down in 1939. Taiwanese thus was reduced to a common daily language. In 1937 the colonial government introduced a concept called "National Language Family" (, which meant that families that proved that they adopted Japanese as their daily language enjoyed benefits such as greater access to education.