Child and Juvenile Welfare and Rights Protection Act Article 2

For the purposes of this Act, "children and juveniles" refers to persons under the age of eighteen; "children" refers to persons under the age of twelve; and "juveniles" refers to persons aged twelve or above but under the age of eighteen.
中文原文 兒童及少年福利與權益保障法第2條
本法所稱兒童及少年,指未滿十八歲之人;所稱兒童,指未滿十二歲之人;所稱少年,指十二歲以上未滿十八歲之人。

English translation for reference only; the Chinese text prevails. Not legal advice.