chief executive donald tsang said that closer ties with the mainland china were helping with the hong kong economy. he referred to the chinese yuan in hong kong. >> translator: china's one country/two system policy is working well for the territory. >>> the operate over the troubled fukushima daiichi power plant says it will revise manuals for the cooling system. as we've been reporting all week, the operation has repeatedly been suspended because of a number of human errors. tepco started the device which decon t. in the latest case, for instance, frenchmade device in the unit stopped automatically on thursday, but operations resumed five hours later. tepco said on friday that the stoppage may have been caused by flawed programming of water levels for a tank attached to the device. as a result of several snags the water recycling system was operating at 55% capacity as of tuesday. >> translator: we're using newly made and newly installed devices. it's understandable there are problems. >> the operation is considered vital tory dugs the amount of radioactive water that's building up i