Hanoi, Jan. 14 -- The personnel preparation for the 14th Party Central Committee has been carried out in the principle of democratic centralism and a coordinated, scientific and transparent manner, ensuring a balance between standards and structure, Politburo member and Permanent member of the Party Central Committee's Secretariat Tran Cam Tu said on January 14. Tu, who is also head of the organising sub-committee of the 14th National Party Congress, made the affirmation at an international press conference on the congress, scheduled for January 19-25, with the participation of 1,586 delegates representing more than 5.6 million Party members nationwide. According to the official, the congress will discuss and adopt key documents, includin...