Investigators on Wednesday arrested two Munich residents on suspicion of spying for China , the Office of the Federal Prosecutor (Generalbundesanwaltschaft) said .  The suspects are a married couple with German citizenship, identified as Xuejun C. and Hua S.. What are the couple accused of?  Prosecutors said the pair were suspected of working for a Chinese secret intelligence agency.  "In order to obtain access to scientific information about high-tech technologies with military applications, they built up contacts with numerous scientists at German universities and research institutes," prosecutors wrote.  The suspects were taken west to Karlsruhe, home to the country's highest courts, for a hearing on their investigative detention Image: René Priebe/PR-Video/dpa/picture alliance In particular, they focused on fostering contacts with "university professors in the areas of aerospace and space travel, IT and artificial intelligence." Among other roles, they are said to have…