One of the most significant similarities is the parents' goal for their kids. Both Chinese and Japanese Americans want their kids to do their best and get not only straight A's but do well in other activities as well. There isn't much difference between the two.
Cultural similarities between India and its neighboring countries include the types of clothing warn, the main religions followed, and the languages used. Food is one area that varies greatly between India and countries nearby.
Cultural convergence is when the similarities between different cultures in the same nation are driven by global and common brands. The similarities are with aspects like consumer preferences, beliefs, aspirations, and values.