Complex sentence: The pine is known to stay green and spread its fragrance, even during the cold, while it grows high towards the sky, thus it is viewed as an upright person with the strength and virtue to endure anything even in face of adversity and all odds.
Split into simpler sentences: The pine is known to stay green and spread its fragrance, while it is also known for growing high towards the sky. Thus it is viewed as an upright person with the strength and virtue to endure anything even in face of adversity and all odds.