In order to carry forward the national spirit, enhance the party spirit awareness of Party members and better welcome the arrival of the 20th National Congress, China Merchants Bank  and Dongsheng organized a party building co construction activity on July 21, 2022, namely the party day activity with the theme of "building a new era and welcoming the 20th National Congress", and visited and studied the memorial hall of the fourth field army of the Chinese people's Liberation Army in Harbin.

The fourth Field Army memorial was first built in 1917. In October 1946, the headquarters of the fourth field army stationed there. During the two years when the front-line headquarters was stationed in Shuangcheng, the heroic fourth field army attacked the Kuomintang reactionary forces with overwhelming force. He has commanded battles and battles for 22 times, including the Xinkailing campaign, the three battles in Jiangnan and the four battles in Linjiang; The summer offensive, autumn offensive and winter offensive, and successfully planned the Liao Shen campaign, which lasted 50 days and annihilated 470000 enemies, made an indelible contribution to the liberation of the whole northeast and then to the victory of the country.

There are six exhibition halls in the memorial hall. The internal display in the exhibition hall truly reproduces the leadership style of our army during the war of liberation. In the exhibition hall at the communication hub of the memorial hall, there are 12 radio stations leading to the front line and columns. Due to the addition of telegraph sound in the exhibition area, historical events are vivid. Even today, more than 70 years later, we can still imagine the tense and busy scene of that year.

At the end of the visit, all Party members informed that they should face the oath wall of joining the party, review the oath of joining the party, and remind party members and comrades to always remember their mission and their original intentions. Through the launch of this theme day activity, all Party members and comrades have deepened their understanding of history, enhanced their awareness of Party members, further strengthened their ideals and beliefs, washed their hearts, tempered their party spirit, and constantly fulfilled their duties in their own jobs with the power of red, constantly promoting the work of the party organization to a new level.