Lin's career began at the U20 level, where he won the silver medal in the 4 × 100 m relay at the 2018 Asian U20 Championships and finished 4th in the long jump individually.

[2] Due to the COVID-19 pandemic in Taiwan, Lin did not compete outside the Republic of China again until 2023, winning his first gold medal at the Asian Indoor Championships.

It was the second gold medal Taiwan had ever won at an Asian Indoor Athletics Championships, after that of pole vaulter Hsieh Chia-han in 2014.

At the competition, Lin broke his track spikes after his second jump, but he was able to recover because his secret was bringing two pairs of running shoes to every meet.

[3] He defeated Indian favorite Murali Sreeshankar and became the third Taiwanese athlete in any sport to qualify for the 2024 Summer Olympics.