The Chinese proverb “种树最好的时候是20年前，其次是现在” (zhòng shù zuì hǎo de shí hòu shì èrshí nián qián, qí cì shì xiàn zài) translates to “The best time to plant a tree was 20 years ago, the second-best time is now.” Here’s an explanation of its meaning:

1. Planting a Tree 20 Years Ago:
   The proverb suggests that the ideal time to plant a tree would have been 20 years ago. It emphasizes the importance of early action and foresight. If one had planted a tree two decades ago, it would have had sufficient time to grow, mature, and provide various benefits by the present time.
2. Planting a Tree Now:
   Since the ideal opportunity of planting a tree 20 years ago has passed, the proverb emphasizes that the second-best time to plant a tree is now. It encourages individuals to take action in the present moment, regardless of missed opportunities or past regrets. Planting a tree now allows it to begin its growth and provide benefits in the future.

The proverb underscores the significance of taking timely action, not only in the context of planting trees but also in broader aspects of life.

Examples of how this proverb can be applied in various contexts include:

1. Personal Development:
   The proverb can be applied to personal growth and development. It suggests that it’s never too late to start learning, acquiring new skills, or pursuing personal goals. While starting earlier would have been advantageous, taking action now can still lead to positive outcomes and personal progress.
2. Environmental Conservation:
   In the context of environmental conservation, the proverb highlights the importance of taking steps to protect and preserve nature. It emphasizes the significance of planting trees and engaging in sustainable practices to mitigate the effects of deforestation and promote ecological balance.
3. Planning and Preparation:
   The proverb can also apply to planning and preparation for future endeavors. It underscores the value of early planning and taking proactive steps ahead of time. However, if one has not done so, it encourages them to start planning and taking action in the present to achieve their desired goals.

Overall, the proverb “种树最好的时候是20年前，其次是现在” serves as a reminder to seize opportunities, take timely action, and make the most of the present moment. It encourages individuals to learn from the past, but also emphasizes the importance of starting now to create a better future.