144-hr transit itinerary question

Under the assumption that you have presented an itinerary in every detail without omitting any stop, then your friend will be definitely eligible for 144 hour visa free transit in wider Beijing area that consists of Beijing, Tianjin and entire Hebei province. When we talk about the itinerary, the basic rule says that the immediate points before and after a Chinese destination have to be in two different countries or eligible territories. In this case, this is fulfilled because the immediate points are South Korea and US. One detail... It is important that your friend always say that she/he is flying from South Korea to US via Beijing and not from US to US via Beijing. South Korea to US via Beijing is the way to go. Everything that has happened before Seoul in reality does not matter.

Thank you for this helpful info - especially hat to say "flying from South Korea to US via Beijing"