"Universe" refers to the infinite space including the earth and all other celestial bodies.
"The old ox broke the car" represents the backward production conditions in the past, with low efficiency and slow speed. There is nothing to miss about this production condition, so it is said that "it was thrown away without hesitation".
"The backbone of Baota shan's indomitable spirit", literally speaking, Baota shan in Yan 'an is tall and upright, indomitable spirit, just like a backbone. In a deeper sense, Baota shan represents Yan 'an and Yan 'an spirit. It is the spiritual pillar and backbone of our nation and must not be lost.
Extended data
The whole poem consists of six sections: the first and second sections are about the eager pursuit of Yan' an spirit; The third and fourth sections write that the realization of modernization needs Yan' an spirit; The fifth and sixth parts expound the great significance of inheriting and carrying forward Yan 'an spirit.
This poem expresses the poet's eagerness to inherit and carry forward Yan 'an spirit. The whole poem consists of six sections. The first and second sections describe the eager pursuit of Yan 'an spirit; The third and fourth sections write that the realization of modernization needs Yan' an spirit; The fifth and sixth parts expound the great significance of inheriting and carrying forward Yan 'an spirit.
Yan 'an spirit, in short, is the spirit of serving the people wholeheartedly, being brave in devoting to the revolutionary cause, being self-reliant and struggling hard formed by the people of China in the arduous revolutionary struggle.