▁the ▁Society ▁for ▁Econom ic ▁Bot any ▁( 2 0 1 4 ), ▁and ▁president ▁of ▁the ▁International ▁Society ▁of ▁Eth n obi ology ▁( 2 0 1 8 - 2 0 2 0 ). ▁ ▁References ▁ ▁Category : L iving ▁people ▁Category : E th n obi olog ists ▁Category : 2 1 st - century ▁American ▁botan ists ▁Category : Year ▁of ▁birth ▁missing ▁( l iving ▁people ) <0x0A> </s> ▁The ▁Pre lim inary ▁Working ▁Committee ▁( P W C ) ▁was ▁a ▁body ▁set ▁up ▁by ▁the ▁Government ▁of ▁the ▁People ' s ▁Republic ▁of ▁China ▁government ▁for ▁the ▁prepar ation ▁of ▁the ▁transfer ▁of ▁so vere ig nt y ▁over ▁Hong ▁Kong . ▁▁ ▁The ▁first ▁meeting ▁of ▁the ▁P W C ▁was ▁held ▁in ▁July ▁ 1 9 9 5 ▁and ▁ended ▁its ▁work ▁in ▁December ▁ 1 9 9 5 . ▁It ▁consisted ▁of ▁ 5 7 ▁members , ▁of ▁which ▁ 3 0 ▁were ▁from ▁Hong ▁Kong . ▁The ▁chairman ▁was ▁Q ian ▁Q ichen ▁and ▁the ▁six ▁vice - ch air men ▁consisted ▁of ▁four ▁main land ▁officials ▁( Lu ▁P ing , ▁Z hou ▁Nan , ▁Ji ang ▁En z hu , ▁and ▁Zh eng ▁Y i ), ▁two ▁Hong ▁Kong ▁vice - ch air men ▁were ▁Henry ▁F ok ▁and ▁T . ▁K . ▁Ann , ▁two ▁ty co ons ▁among ▁the ▁most ▁trust ed ▁by ▁Be ij ing . ▁The ▁main land ▁members ▁included ▁those ▁with ▁vice - minister ial