Can you imagine sitting still for years, doing the same thing again and again while waiting for the results, if any, to show? People might have called this the definition of insanity - doing the same thing again and again yet hoping for a different results. But there's exactly how a Chinese bamboo tree takes to grow.
Most tree will grow steadily, so you can definitely see progress for the effort of taking care of them and watering them. The Chinese bamboo is different. For the first year, you see nothing. So you water them and take care of them. For the second year, you see nothing. It's alright, you continue to water them. For the third year, you also see nothing. Now, you're starting to feel anxious. Did I plant them correctly? Are they dormant and waiting to burst out of the soil or dead and buried in it? ......