Home > General How to collect the timing chip, bib number. We will send by express delivery system. All the participants should wear the bib number at their chest during the race. The bib number must not be changed or removed during the race. If it is changed or impaired, he or she can be disqualified. Timing Chip The Chosun Ilbo, which introduced timing system for the first time in Korea, use the chip again this year to provide accurate record. The chip should be returned immediately after the race.