Many book said that first baby boy may easy suffer from abdominal pain with unknown reason (by statistic only). May be their intestines not prepare well. So they will cry cont'd and non stop. This lead to call 佰日哭, since their abdominal pain will subside suddenly or gradually when nearly hundred days. My son crying after 1 wks after born, then crying at pm till midnight every day. i try many method but not much help. Some of my friends try use hot (or warm, don't too hot) towel or palm to warm his abdominal , try to relief his pain. My brother's wife said that use one egg, boil it with water, remove egg skin, then put silver ring or silver things into the egg inside, then cover with thin towel, massage the baby abdomen. My brother 's wife try it for her son and she said that it is help and her son show relief & the crying frequency decrease. U can try.