White and Wattana were top-16 stalwarts in the 1990s but after entering the tournament at the second preliminary round, were immediately knocked out by players who had already won once to get that far.
Multiple former World Championship finalist White was thumped 5-1 by Robbie Williams, while London-born Norwegian Kurt Maflin defeated Wattana by the same score.
Tony Drago edged out fellow veteran Alan McManus
The qualifying rounds of the 2013 China Open run from Wednesday to Saturday, with the 16 qualifiers going through to the final stages in Beijing, to be held from March 25 to 31.
Qualifying round two results
Dechawat Poomjaeng 5-4 Cao Yupeng
Tony Drago 5-4 Alan McManus
Ian Burns 5-1 Rod Lawler
T Thirapongpaiboon 5-2 Luca Brecel
Sean O'Sullivan 5-1 Alfie Burden
Paul S Davison 5-3 Adam Duffy
Liu Chuang 5-2 Daniel Wells
Barry Pinches 5-0 Fraser Patrick
Anthony McGill 5-2 David Grace
Kurt Maflin 5-1 James Wattana
Robbie Williams 5-1 Jimmy White
Andy Hicks 5-2 Michael Wasley
Mike Dunn 5-3 Liam Highfield
Tian Pengfei 5-1 Peter Lines
Chen Zhe 5-3 Thepchaiya Un-Nooh
Mark Joyce 5-3 Aditya Mehta