8月19號，嶽昕喺網上發表公開信，上款係「尊敬的黨中央和習近平總書記」。公開信介紹佳士工潮，提出聲援團嘅訴求，包括釋放被捕工人學生、依法組建工會、徹查聲援團成員失蹤等。當日，香港社民連等團體一行約20人，由西區警署出發遊行至中聯辦，高叫「釋放沈夢雨」、「組建工會無罪」、「釋放佳士工人」等口號。佢哋認為惠州警方所講「四個監控全部損壞」係有意拖延調查，並指十幾個工人俾人拘留，有工人同聲援者俾警方毆打。
On August 19, Yue Xin published an open letter on the Internet, which read: "Respected Party Central Committee and General Secretary Xi Jinping". The open letter introduces the Jasic workers' movement and puts forward the demands of the solidarity group, including the release of the arrested workers and students, the formation of a trade union in accordance with the law, and a thorough investigation into the disappearance of the members of the solidarity group. On the same day, about 20 members from the Hong Kong League of Social Democrats and other groups marched from the Western Police Station to the Liaison Office of the Central People's Government, shouting slogans such as "Release Shen Mengyu", "Forming a trade union is not guilty" and "Release the Jasic workers". They believe that the Huizhou police's statement that "all four surveillances have been damaged" is a deliberate attempt to delay the investigation, and that more than a dozen workers have been detained, and some workers and supporters have been beaten by the police.