Neighbors' ties warming up like spring season

China-Japan relations are entering a warm season just as spring follows winter, experts say.

President Hu Jintao's visit to Japan during the "cherry blossom season" will be preceded by the publication of the Chinese edition of Wen Jiabao, Pitcher No 35 in Japan.

The book, to be published about one month before Hu's visit, has many interesting anecdotes from the Chinese premier's ice-thawing visit to Japan last spring.