2021

下午和儿子散步回来, 他看到火盆，突发奇想，掏出几块木炭，研起粉末来。 我问，“你要做黑火药吗？” (我倒是不怀疑他能做出来）答，“不是的，等一会你就知道了” 一会儿之后，参水办成糊状，拿个小木棍蘸着糊糊，居然主动地在地上练习写中文了，可把我感动坏了!

 me: What area in mathematics you like least and not good at? son: Geometry and Trigonometry … After reading an article on Mathematics Magazine, Evin occasionally wrote something…  me: What are you writing? son: An article  me: What’s it about? son: The Geometry and Trigonometry properties of Triphos  me: Triphos? son: {some explanation…}  me: I