Accusing the US of sheltering blind activist Chen Guangcheng in its embassy using abnormal means,China on Monday asked the US not to repeat such an incident,in the overall interest of bilateral ties. Chinese Foreign Ministry spokesman Hong Lei declined to answer questions over when Chen and his family would be given passports to travel to US. The (Chen) incident showed that US has interfered with the internal affairs of China, Hong said. Charging Washington of displaying irresponsible attitude by letting the dissident into its embassy compound,he said the US should draw a lesson from the incident and reflect upon its policies and moves and take necessary measures to prevent similar incidents. Chen sure of being permitted to leave Chinese activist Chen Guangcheng said Monday he is confident that Beijing will hold up its end of a tentative deal to let him study overseas. Under still-evolving arrangements announced Friday by Washington and Beijing,Chen may be able to leave to study in the US.