There must be 'RZ' for born in Hong Kong, 'RO' for born other places to be able to enter Hong Kong. 'R' means Right to land in Hong Kong (RTL). If there are no stars then these symbols are just under the Date of Birth's date XX-xx-xxxx and above Date of Issue. If there is 'CO' then she can not enter Hong Kong without a valid visa. Another way to confirm is when she got her identity card at that time she had an endorsement on her passport which reads: Previous conditions of stay are hereby cancelled or varied. If it is cancelled then she can enter Hong Kong if varied she can not.