This jia wood DM is strong and so the yi-chou fu-yin in his natal chart is negative. The hour pillar also represents the children palace and so the sad event can be due to the problems of his children. For a male jia wood DM, his children are represented by his officer stars which are the geng and the xin metal. Xin protruded in 2011 during his ding-chou LP and unfortunately for him, the ding fire star countered the xin metal star and xin fell into the storage of chou. The ji earth in the natal chart could not arbitrate the countering due to the placements of the 3 stars.
Storage and graveyards of the earth branches can give us some clues about our family members as to when they can face some problems. We have to look at the individual chart to know the extend of the problem. It might not necessarily be a serious one but prevention is always better than cure.
In fact, the second son died about 2 months after I posted this case. No reason was given for the death of the second son.