wˌɛn kənstɹˈʌkʃən bɪɡˈæn ɪn tˈuː θˈaʊzənd tˈuː, ðə lˈɛŋθ ʌvðə spˈɜː lˈaɪn wʌz bˈɪlt jˈuːzɪŋ tˈʌnəl bˈoːɹɪŋ məʃˈiːnz tˌiːbˌiːˌɛmˈɛs θɹuː kwˈuː tˈʌŋ.
When construction began in 2002, the length of the spur line was built using tunnel boring machines (TBMs) through Kwu Tung.