Like many of you, I also saw this as a child. I was born in Beijing and the series was dubbed in Mandarin. It is such nostalgia and so imbued with emotion. And this is especially true to me. My mother left my sister and me for a America when I was two. However, it took me much longer to make it to America, at the age of 16.
Speaking of nostalgia. A few days ago, I ran into an article on "Krtek". Does that ring a bell? Krtek, a cute little mole was created by a Czech animator and especially popular in Communist countries. It's quite big in Germany and Japan too. I'd love to see that again.
And many of the quality, Chinese animes too! Of course, those early ones, made in the 60's & 70's, in studios in Shanghai. Most of them are not serialied but they are all very artistic. The execution and style rival any early Japanese animation.
I'll stop here since I rekon this is not a request forum afterall. My point is that "3000 leagues" has brought back so much to/in me.