Indeed. For all of modern Communist China's problems, taking revenge on family members isn't known to be one of them. They focus on a individual's own loyalty to the state and whoever holds power. As is to be expected, as part of the point of Communism is to destroy the family unit and replace it with the state. This is different from, for example, Japan, where their are explicit laws mandating familial responsibility for (adult, not only juvenile) relatives.