Our local sushi palace (Kinoko on W. 72 St.) is closed for renovation, so we thought we'd try the sushi menu at China Fun (246 Columbus Ave. between 71-72 Sts.). Were we ever sorry. Besides paying about $20 more than at Kinoko for two take-out meals, we did not get even one piece of sushi that was fresh and flavorful. A monument of misery was the mackerel, which had been soaked in salt water, presumably to prevent it from spoiling. The yellowtail was tired and mushy. The salmon eggs had no snap. The octopus, which thankfully was an unusually small piece, was sliced very very thin. This was helpful because it was leathery. And tasteless. The eel was mealy. None of the fish tasted spoiled or rotten, it was just well past the peak of freshness. The restaurant served large portions of miso soup which was delicious.