Visitors try to communicate with a humanoid robot at the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)

Visitors view "Roboy", a humanoid robot, at the Swiss Pavilion of the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)

A staff member displays a humanoid robot at the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)

A humanoid robot performs pole dance at the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)

A staff member removes the head of "Roboy", a humanoid robot, at the Swiss Pavilion of the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)

A staff member displays a humanoid robot at the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)

A staff member displays a humanoid robot at the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)

Visitors view "Roboy", a humanoid robot, at the Swiss Pavilion of the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)

Two humanoid robots perform pole dance at the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)

A staff member displays a partial model of a humanoid robot at the CeBIT tech fair in Hanover, Germany, March 11, 2014. (Xinhua/Zhang Fan)