Monogram,
you are so kind to calm me by your message.
he does sometime pass winds and i believe what you have said is the answer.
i will do the 掃風 longer from now on.
THANKS AGAIN.
But, still, listening to his cry really make my heart breaks. :-(
Nillie,
wow, it is news to me, i.e. gas drops, never heard of that. Thanks so much for your advice, and I think I may bring him to see the doctor asap.
By the way, good luck to your body checkup in August.