▁the ▁chief ▁religion . ▁The ▁Chinese ▁primarily ▁ad here ▁to ▁Buddh ism ▁and ▁Christian ity , ▁with ▁a ▁minor ity ▁following ▁T ao ism ▁and ▁Conf u cian ism . ▁ ▁Geography ▁ ▁Top ography ▁The ▁city ' s ▁top ography ▁is ▁generally ▁und ulating ▁and ▁h illy , ▁with ▁an ▁alt itude ▁of ▁ ▁above ▁sea ▁level . ▁H illy ▁areas ▁are ▁primarily ▁in ▁the ▁west ▁and ▁south , ▁including ▁Mount ▁Gir im aya ▁( 5 0 ▁metres ▁above ▁sea ▁level ) ▁and ▁Tower ▁Hill . ▁A ▁ ▁urban ▁forest ▁is ▁in ▁the ▁Old ▁Village ▁area . ▁An ▁area ▁of ▁ ▁is ▁under ▁cultiv ation ▁for ▁food ▁cro ps , ▁fish eries ▁and ▁forest ry . ▁F allow ▁land ▁is ▁, ▁and ▁ ▁are ▁developed . ▁The ▁remaining ▁ ▁are ▁sw amps ▁and ▁forest . ▁ ▁Ge ology ▁The ▁city ' s ▁soil ▁has ▁an ▁average ▁p H ▁below ▁ 5 , ▁with ▁red - yellow ▁pod z ol ic ▁soil ▁and ▁reg os ol . ▁A ▁small ▁area ▁is ▁bog ▁soil ▁and ▁light - gray ▁reg os ol ▁derived ▁from ▁the ▁de position ▁of ▁sand ▁and ▁cl ay . ▁Although ▁such ▁soil ▁is ▁less ▁suitable ▁for ▁rice , ▁other ▁cro ps ▁may ▁be ▁grown . ▁The ▁oldest ▁form ations ▁are ▁P ermo - Car bon ifer ous ▁lim estone , ▁Late ▁Tri ass ic ▁sl ate ▁and ▁Tri ass ic - J ur ass ic ▁gran ite . ▁Com position ▁of ▁the ▁gran it ic ▁rocks ▁includes ▁dark - color ed