State your stance (Totally agree/ Totally disagree/ to a large extent agree/ to a small extent agree.
In each paragraph, state the aspect you are writing on. State your arguments. Write concrete examples to support arguments. Consider the situation of the place (eg Hong Kong and China) specified in the question.
When you write counter-arguments (either in the second half of each paragraph or at the last part of the whole essay), introduce opposing views with “Some people may say that…” and end with “But this is not true.” Start your counter-arguments with “Actually…”.
Show that you understand the opposite views even if you cannot refute those arguments/ form sound counter-arguments by writing: “It is undeniable that… (eg this may cause some problems/ harm xxx’s interest.) However, aaa is more important than bbb (state your value judgment such as “good family relationship is more important than good relationship with friends”). Therefore, I think … (your arguments outweigh the opposite views)”
[If you can’t even come up with a value orientation, write “there are more advantages than disadvantages, so I support…”.]
In the conclusion, state your stance again.
The highlight of this example is the fact that a lack of fruit and vegetable in the main meals is acknowledged by McDonald's BUT actions are being taken to address the problem, though the effectiveness is uncertain. By acknowledging such measures, the extent of McDonald's food being unhealthy is reduced from downright unhealthy (100%) to largely unhealthy (85%). Therefore, this supports the student's stance that 'to a large extent it is not healthy' or 'to a small extent it is healthy'.