Chong started his primary education in SJK(C) Methodist (Methodist Chinese National Primary School), Sibu. He continued his Primary 3 to 5 education at Kuching's SJK(C) Chung Hua No. 3 (Chung Hua No. 3 Chinese National Primary School), and Primary 6 at SRK St. Theresa Padungan (St. Theresa Padungan National Primary School), Kuching. Chong later undertook his secondary education in SMK St. Joseph, Kuching (St. Joseph, Kuching National Secondary School) and Saint Patrick's School, Singapore. He was admitted into Victoria Junior College, one of the top junior colleges in Singapore.
Chong defended his parliamentary seat in the 12th Malaysian general election with an increased majority.[11] In 2011, he once again, he defended his state seat, this time against Yap Chin Loi, with a majority vote of 4,824.
On 17 December 2012, during the DAP 16th National Congress, Chong was among seven DAP leaders appointed to the party's Central Executive Committee (CEC).[12] On 5 May 2013, he contested for the Bandar Kuching parliamentary seat for the final time in the 13th Malaysian general election and retained the seat with an even larger majority of 19,642 against SUPP's Tan Kai.[13]
On 7 May 2016, during the 11th Sarawak state election, Chong retained his Kota Sentosa state seat with a majority vote of 2,819 against Yap Yau Sin.[14] On 12 November 2017, during the DAP Central Executive Committee (CEC) re-election, Chong was re-elected as one of the party's five national vice-chairperson.[15][16]
Following incumbent Stampin MP Julian Tan Kok Ping's decision to retire from politics,[17] Chong moved to contest the Stampin parliamentary seat against SUPP president Sim Kui Hian in the 14th Malaysian general election (GE14) on 9 May 2018, which was seen as a 'grey' or unsafe seat following redelineation by the Election Commission (EC).[18] His special assistant, Kelvin Yii Lee Wuen, contested for the Bandar Kuching seat.[19] Chong went on to win with a majority vote of 14,221.[20][21][22] Following the historic events of the GE14 which saw the first-ever change in the Government of Malaysia and end of six decades of National Front (BN) rule, on 2 July 2018, Chong was sworn-in as Deputy Minister of Domestic Trade and Consumer Affairs of Malaysia by the Yang di-Pertuan Agong (King of Malaysia).[23][24]
In the 12th Sarawak state election, Chong's special assistant, Michael Kong Feng Nian was selected to contest in Kota Sentosa[25][26] whereas Chong went on to contest in the Padungan state seat against the mayor of Kuching South, Datuk Wee Hong Seng. Chong went on to win the Padungan state seat with a majority of 1,198.[27]
