念旧勿忘心念旧勿忘本
[niàn jiù wù wàng xīn niàn jiù wù wàng bĕn]
'Recalling old times and don't forget them' reflects cherishing memories and remembering where one comes from and what matters most; it carries respectfulness toward history and origins, encouraging the user not only to look forward into the future but to also look back on the past for guidance.