At the height of the movement to change place names in Singapore to Mandarin ones using Hanyu Pinyin romanization, the new town to be built in the area was initially known as Zhenghua, after the Pinyinised version of Cheng Hwa, which was derived from the old road, Jalan Cheng Hwa. The trading of old dialect names which have gained common currency for unfamiliar, Mandarin ones were not well received by the public, and Bukit Panjang was quickly reinstated. However, the name Zhenghua is preserved in the name of the flyover between Bukit Panjang Road and the Bukit Timah Expressway, in Zhenghua Park and in the Zhenghua ward of the Holland-Bukit Timah GRC.