BEIJING, Dec. 4 (Xinhua) -- China on Thursday revealed detailed evidence behind the conviction and execution of two Chinese men who spied for Taiwan and stole missile secrets.

    A cover story published in Global Times, owned by the People's Daily, quoted an exclusive and reliable source that Wo Weihan, who was executed last Friday after being convicted of leaking Chinese strategic missile data to Taiwan intelligence, had brought about an "extraordinary loss to national security".

    Although not identifying the source, the story said 60-year-oldWo was recruited by Taiwan intelligence agencies in Germany in October 1989 during a five-year government paid study for doctoral degree in Munich.

    Wo neither came back to China nor continued his medical research after graduation, but started to develop his assets in the Chinese mainland and collect political, economic and military secrets under the cover of a businessman shuttling between Europe and China.

    From the early 1990s to early this century, Wo acquired Chinese military secrets with Taiwan intelligence agencies' financial aid, including information on the People's Liberation Army's night combat equipment.

    The story also said the Wohua Biological Technology Company Ltd. that Wo registered in Beijing, and his title "company's chief scientist", were actually covers for his espionage.