A United Chinese what is that definition. It is transient in nature and impulsive. One can say certain themes and subject matters propagate Chinese unity but there are not many. For example the PRC Constitution is not one of those reason.
A Chinese person is today a person from PRC, Hong Kong, Taiwan, Xinjiang, Tibet, Singapore, Malaysia, Indonesia, America, India and other areas (also include the many that are not documented and have requested such). Among these there are separate countries, states, areas, regions, and administrative profiles. Are all Chinese person united. Are all Chinese people against India. I dont believe that.
Can a Chinese person say that Chinese ought to be united against India because of a 1962 war. The conflict is difficult to explain and also profile into common person psyche with people from India and Chinese people. Religion and 2000+ years of history one can say. Even proximity and pragmatism for today and tomorrow and day-after. The 1962 war was a conflict exasperation between a Leader of India and Leader(s) of Peoples Republic of China. I believe there is uncommon sediments for Chinese to say that they do not like Indians. What would be the reason for Chinese people to be pushed this message.
The PRC leaders however recognize and behave different to Chinese people. At this moment the PRC people "endorse" the PRC leaders but that does not mean Chinese people agree with PRC leaders. I wont go into separate countries, states, areas, regions, and administrative profiles and their views towards India but they are different from PRC leaders.
But one things for sure is that President Xi does not represent Chinese people.
Also there was a reference to United India and United race of India. i wont go into the why and justify but share a example where there seems to be a recent attempt of copying India and not PRC:
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I feel President Xi and PM Modi have a chance of developing a good connection and each will take into account the Country and People interests.