While he was the president of Bank of Taiwan, as he had more spare time, he associated more frequently with upper management in political and financial society, and backed by Kinmochi SAIONJI, he gradually set foot into the world of politics.
台湾銀行時代の中川は、時間的に余裕ができたこともあり、政財界上層部との付き合いが増え、西園寺公望からの後援を受けて次第に政治の世界へと足を踏み入れるようになっていった。