Hong Kong (CNN) It's a puzzling tale of unrequited love.

A 27-year-old Chinese man declared his affections by solving 840 Rubik's cubes and using them to create a giant portrait of his dream girl -- a next-door neighbor.

But, alas, she said no.

"I simply wanted to surprise her and tell her I like her ... but I was rejected," Tong Aonan, a mechanic from the northern Chinese city of Shenyang, told CNN.

When asked how he was feeling he said: "I'm not giving it too much thought."

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