Volunteering works for the 2 boys

My 2 big As had been doing this kind of job since 2016... but for #3, this is his first... Normally hb will bring the kids for volunteering works during their school holidays... and this June holidays, Alvan join in the fun... I can't recall if he went last year... Anyways, these photos were taken by their daddy... so look at the fun they had... hahaha... Not sure why jiejie did not join this time... maybe she is busy with her school activities... Good job boys! :)