一九三一年四月,顾顺章(时为中共中央政治局委员、中央情报保卫机关具体工作负责人)在汉口被捕叛变,供出党的大量机密,使驻在上海的中共中央机关的安全受到极大威胁。在此紧急关头,担任中共中央军委书记的周恩来同志挺身而出,在陈云等同志的协助下,机智果断地采取一系列应急措施,使党避免了重大损失。事后,国民党反动当局对周恩来同志恨得咬牙切齿,先是下达通缉密令,继而又发布悬赏缉拿启事,但其阴谋始终未能得逞。于是,敌人又拿出极其毒辣的一手,次年二月中、下旬在上海各报登载了伪造的“伍豪等脱离共党启事”(“伍豪”是周恩来同志的化名),企图颠倒黑白,混淆视听。当敌人施展造谣诬陷的伎俩时,周恩来同志已离开上海两个多月,进入江西中央革命根据地参加党的领导工作。党组织在不可能立即登报澄清事实的情况下,决定先在报上打个招呼。经《申报》总经理史量才先生的同意,于一九三二年二月二十二日在该报广告栏登出这样的信函:“伍豪先生鉴:承于本月十八日 In April 1931, Gu Shunzhang, who was a member of the Political Bureau of the CPC Central Committee and head of the Central Intelligence Corps, was arrested and mutinied in Hankou for a great deal of secrecy from the party so that the security of the CPC Central Committee in Shanghai was affected Great threat At this critical juncture, Comrade Zhou Enlai, secretary of the Central Military Commission of the CPC Central Committee, came forward and, with the assistance of Chen Yun and others, decisively adopted a series of contingency measures so that the party avoided heavy losses. Afterwards, the reactionaries of the Kuomintang hated Comrade Zhou Enlai for their grudges. They first issued a secret order and then released a reward for arrest but the conspiracy failed to succeed. As a result, the enemy took another extremely hot hand. In mid-February and late February, various newspapers published fake “Wu Hao et al.” (The alias of Comrade Zhou Enlai) in an attempt to reverse the black and white , Confuse audio-visual. When the enemy displayed his tactics of rumor framing and false accusations, Comrade Zhou Enlai left Shanghai for more than two months and entered the revolutionary leadership of Jiangxi Province to participate in the leadership of the party. When it is impossible for the party organization to immediately report and clarify the facts, it is decided to say hello in the newspaper. With the consent of Mr. Shi Dicai, the general manager of the “declaration”, he published such a letter on the ad bulletin board of the newspaper on February 22, 1932: "Mr. Wu Hao: As promised on the 18th of this month