Chinese folk wind instruments, including the paixiao, xun, koudi, bawu, hulusi, and lusheng, have distinctive timbres but are less well known than the other Chinese wind instruments. The paixiao (a panpipe) and the xun (ocarina) are ancient instruments. The koudi is a small bamboo whistle/flute, which can play exciting birdlike melodies. The bawu, hulusi, and lusheng have different shapes and playing techniques but have similar embedded metal plate reeds that produce their sounds. This talk will give brief descriptions of the musical and spectral characteristics of these instruments, and then describe the additive synthesis design template used to capture their subtle timbral characteristics using score data in Csound. In addition, the design is expressive and successfully uses spectral interpolation for the idiomatic ornamental phrasing for each instrument. We use a special amplitude/frequency function modulation method to simulate trills, which are also tied to varying numbers of grace notes, as tested on traditional Chinese scores. [Work supported by RGC Grant No. HKUST 6020/02H, with special thanks to Chan Chun Nin for recording instrument samples and consultation on playing the instruments, and to Alfred Wong and Jenny Lim for preparing examples.]