ting . ▁They ▁are ▁usually ▁the ▁pe ac em akers , ▁and ▁the ▁people ▁ask ▁advice ▁from ▁them , ▁so ▁it ▁is ▁important ▁that ▁they ▁are ▁wise ▁and ▁have ▁good ▁or ator ical ▁ability . ▁ ▁Like ▁the ▁other ▁eth nic ▁groups , ▁they ▁also ▁follow ▁a ▁lot ▁of ▁custom s ▁and ▁trad itions . ▁For ▁example , ▁pre gn ant ▁women ▁and ▁their ▁hus b ands ▁are ▁not ▁allowed ▁to ▁eat ▁be ef , ▁cow ’ s ▁milk , ▁and ▁dog ▁meat . ▁They ▁must ▁also ▁avoid ▁streams ▁and ▁water falls ▁as ▁these ▁cause ▁harm ▁to ▁un born ▁children . ▁Other ▁notable ▁trad itions ▁are ▁the ▁ng il in ▁( av oid ing ▁the ▁evil ▁water ▁spirit ) ▁and ▁the ▁kont ad ▁or ▁kont id ▁( rit ual ▁performed ▁to ▁the ▁child ▁to ▁avoid ▁har ms ▁in ▁the ▁future ). ▁Bet ro th als ▁are ▁also ▁common , ▁even ▁as ▁early ▁as ▁birth , ▁but ▁one ▁may ▁break ▁this ▁eng agement ▁if ▁he / she ▁is ▁not ▁in ▁favour ▁of ▁it . ▁Upon ▁death , ▁sacrific es ▁are ▁also ▁made ▁in ▁honour ▁of ▁the ▁spirit ▁of ▁the ▁dead ▁and ▁kol ias ▁is ▁celebrated ▁after ▁one ▁year ▁of ▁m our ning ▁period . ▁ ▁They ▁use ▁the ▁uniqu ely ▁sh aped ▁Kal ing a ▁head ▁ax ▁( s ina w it ), ▁b olo ▁( g aman / bad ang ), ▁spe ars ▁( bal b og / t ub ay / say - ang ), ▁and ▁shield s ▁( kal as ag