National badminton ace Lee Chong Wei has returned for his first day of training at the Academy Badminton Malaysia (ABM) in Bukit Kiara, Kuala Lumpur.<br /><br />The former world No. 1 was seen spending hours sweating it out at the gymnasium on Friday. <br /><br />He last played competitively at the Indonesian Open in July last year, where he made it to the semi-finals before losing to reigning world champion Kento Momota.<br /><br />It was a week after the tournament that Chong Wei flew to Taiwan to undergo a two-and-a-half month treatment after being diagnosed with early-stage nose cancer.
