由于教学需要,经过多年实践,我用轻质煤碴砖作为学习制作水石盆景的材料,感到效果很好。初学者最适宜选用。煤碴砖有几种,其中有的在制造时加了发泡剂,成品多孔而质轻,入水能浮,形同浮石,这就是轻质煤碴砖。这种砖的材质均匀,硬度适宜,初学者可以随心 Due to teaching needs, after years of practice, I used light coal gangue bricks as materials for learning to make Shuishi bonsai. I feel very good. The best choice for beginners. There are several kinds of coal gangue bricks, some of which have been added with foaming agents during manufacture. The products are porous and light in weight, and they can float in water and form pumice stones. This is a lightweight coal gangue brick. The material of this brick is uniform and the hardness is suitable. Beginners can follow