张艾枚：应检讨赵紫阳为何最初支持了426社论；八九六四研究者通病---“证据小结论大”兼批郑旭光、戴晴 Zhang Aimei: We should review why Zhao Ziyang initially supported the 426 editorial; the common problem of June 4 researchers in 1989: "small evide