In this comparative study from New Zealand: https://www.nzta.govt.nz/assets/resources/research/reports/4... you can find a Comparative evaluation of transport modes where maritime shipping is cheaper than train, but this depends on the number of containers (you can put much more on a vessel). If we can increase the number of containers on trains, this could change. Also right now the China-Belgium trip can take 20 days by train (cf. https://www.train-chain.com/) and usually around 30 days by sea.
I am currently working on a project that lets you paste any chinese text coming from any source (for me it's mostly from news media and wechat moments), and provides you the translation, automated reading, word-by-word translation, and allows you to select words to memorize by a spaced repetition system.
For me the real deal is in the memorize function that gives you a word plus a sentence coming from your collection of text to get some context. You get the same word-by-word translation on the sentence, you can play it out, you are not only working on your words but discovering new words from the sentences and improving your listening comprehension.