Chan was first selected to represent her country at the Singaporean leg of the
2010 FINA Swimming World Cup where, aged just 12, she competed in four events. In July the following year, Chan set her first national under 17's record in the 4 × 100-metre freestyle relay at the
2011 ASEAN School Games and finished the year by competing at the Stockholm, Moscow, Berlin and Singapore legs of
2011 FINA Swimming World Cup. In June 2012, Chan won first major medal at the
inaugural Southeast Asian Swimming Championships in Singapore. Swimming alongside
Koh Hui Yu,
Amanda Lim and
Teo Jing Wen, the foursome won gold and the set the first
Championship record in the 4 × 200-metre freestyle relay. Less than a month later, at the
2012 ASEAN School Games in
Surabaya, Indonesia, Chan as part of the team that took out the 4 × 100-metre freestyle relay. Posting a time of 3:56.55, this shaved 0.69 seconds off the national under 17's record During the Tokyo leg of the
2012 FINA Swimming World Cup, Chan set a personal best in the 50-metre freestyle of 26.46 seconds. At the eighth and final leg in Singapore, Chan covered the distance in 26.45, setting a new personal best by 0.01 seconds, eclipsing the time she set four days prior. After gaining valuable experience by competing in the
Dubai Asian Swimming Championships in December 2012, Chan won four silver medals at the
2013 Asian Youth Games in
Nanjing. Individually, she was runner-up in the
50-metre and
100-metre freestyle events. She then teamed with up
Samantha Yeo,
Stacy Tan and
Meagan Lim to come second in the
4 × 100-metre medley relay and in the
4 × 100-metre freestyle relay, Chan with Yeo,
Hoong En Qi and
Rachel Tseng set a new national 17's record time, bettering the previous record by 1.88 seconds. Chan started 2014 by claiming three individual gold medals and a silver at the 2014 Southeast Asian Age Group Swimming Championships in Singapore. Swimming in the 14–16 aged group, Chan won the 100-metre freestyle in 56.87 and the 50-metre butterfly in 27.91, both new championship record and personal best times. Chan won her silver medal in the 200-metre freestyle. Finishing 2.12 seconds behind Vietnam's
Nguyễn Thị Ánh Viên, Chan stopped the clock at 2:04.44 inside the old championship record of 2:04.65 set by
Benjaporn Sriphanomthorn of Thailand in 2011. Chan was also part of a Thailand clean sweep, taking out all three female relays in new championship record times. In the 4 × 100-metre freestyle Chan, Rachel Tseng,
Christie Chue and
Hannah Quek recorded a time of 3:54.66. This also broke national under 17's record by one hundredth of a second. and in the final event of the meet Chan with Tseng, Chue and
Tan Jing-E just got home over Thailand in the 4 × 100-metre medley relay, posting a time of 4:20.25. This time also shaved 0.12 seconds off the under 17's record. Two weeks later at the
2014 Southeast Asian Swimming Championships in Singapore, Chan won gold in the 50-metre butterfly in a new
championship record and personal best time of 27.49. Chan also won six silver medals and set a new personal best of 1:01.67 in the 100-metre butterfly. One month later at the
Glasgow Commonwealth Games, Chan competed in six events and the
50-metre freestyle. In September, Chan competed at
2014 Asian Games in
Incheon, South Korea, where in the final of
50-metre freestyle she achieved a new personal best time of 25.91, breaking the 26-second barrier for the first time. ==Personal life==