 krw weakens to over oneyear low vs usd  for the midday report please click  south korean shares closed lower on tuesday in line with broader asian markets on lingering fears over the fate of china evergrande group and worries about the potential impact of a widening power shortage in china the won weakened to a oneyear low while the benchmark bond yield rose  the kospi closed down 3572 points or 114 at 309792  chip giants led the decline on the benchmark index with samsung electronics and sk hynix falling 180 and 096 respectively naver and kakao dropped 261 and 208 respectively  without making a reference to ailing developer evergrande  china’s central bank vowed to protect consumers exposed to the housing market on monday and injected more cash into the banking system  widening power shortages in china meanwhile halted production at a number of factories including suppliers to apple inc and tesla inc and are expected to hit the country’s manufacturing sector and associated supply chains  further denting risk appetite were soaring us treasury yields that touched a threemonth high overnight following the federal reserve’s signals last week that bond purchases could be tapered as early as november  foreigners were net buyers of 107 billion won 907 million worth of shares on the main board  the won ended at 11844 per dollar on the onshore settlement platform 064 lower than its previous close and marking the lowest close since midseptember last year  in offshore trading the won was quoted at 11842 per dollar down 05 from the previous day while in nondeliverable forward trading its onemonth contract was quoted at 11851  in money and debt markets december futures on threeyear treasury bonds fell 016 point to 10935  the benchmark 10year yield soared by 82 basis points to 2249 reporting by joori roh editing by subhranshu sahu