Tonghua or Tunghwa (both: tŏŏng´hwä´), city (1994 est. pop. 349,500), SW Jilin prov., China, in a mountainous region, and on a railroad to Korea. Abundant coal and iron reserves are in the area, and the city has iron- and steelworks. Machinery, electrical equipment, and paper products are also manufactured. The city was formerly the capital of Andong prov. and was part of Liaoning prov. from 1949 to 1954.
"Tonghua." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (November 13, 2018). https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/tonghua
"Tonghua." The Columbia Encyclopedia, 6th ed.. . Retrieved November 13, 2018 from Encyclopedia.com: https://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/tonghua