shanghai oct 11 reuters  chinese bluechip companies edged up on monday as coal firms were lifted by supply fears and real estate shares gained on some cities’ planned supportive measures  the bluechip csi300 index rose 01 to 493619 while the shanghai composite index ended flat at 359171 points  the coal subindex surged 41 amid short supply which led to china’s worst power crunch in years  china has ordered its two top coal regions to boost output and will allow coalfired power utilities to charge customers higher prices  citic securities said it would take time for the measures to take effect and estimated the supply crunch situation is hard to be reversed this year  real estate firms and banks gained more than 2 each  harbin has become one of the first cities in china to announce measures to support property developers and their projects and analysts expected some other cities will follow suit  chinese president xi jinping vowed on saturday to achieve “peaceful reunification” with taiwan while the chineseclaimed island responded by calling on beijing to abandon its coercion  talks between indian and chinese military commanders to resolve a protracted standoff on a stretch of disputed himalayan border have broken down with both sides blaming each other on monday  the environmental governance subindex lost 34 while the construction engineering subindex shed 28 reporting by shanghai newsroom editing by amy caren daniel