Collecting and testing a number of seed varieties, Huang found that the hak ip, or black leaf lychee was most appropriate to cultivation on Taiwan, and would yield plentiful, quality fruit. Propagation of the hak ip lychee began that year, but resulting harvests were a disappointment due to farmers 'inexperience in growing the new variety.
今年已七十六歲、早年畢業於北京大學園藝系的黃弼臣指出：「當年選擇種植黑葉種的原因，並非因黑葉品質最優，而是經多方試驗後，發現它的根質最堅韌，較不怕風災雨害，最適宜本地的環境，且產量最豐。」