Prime Minister Syed Yousaf Raza Gilani called on President Asif Ali Zardari here at Aiwan-e-Sadr on Monday. The President briefed the Prime minister about his recent visit to China and his interaction with the Chinese leadership. The Prime Minister felicitated the President for the accomplishment of a successful visit to china which, he said, would prove to be a milestone in further strengthening bilateral relations between the two countries.-PR