Civil Service Personnel Rule 156

156. In respect of the grant of regional allowance if the long vacation is granted to be enjoyed out of the township where the regional allowance is granted:
(a) if the long vacation is granted not in continuation of a leave, that vacation period shall be treated as the temporary transfer out of the township where the regional allowance is granted;
(b) if the long vacation is granted in continuation of the leave period with full average pay not exceeding four months, that long vacation period shall be treated as the leave period when the regional allowance is being entitled.