For the meaning of Eminent - expansion. Harvest - determination click HERE.
The empty cauldron or: this is all there is.
The character fu, confidence (usually translated as truth) means probably to have the support of gods, ancestors, spirits or allies. If you show them gratitude, they will bless your ventures. It also includes inspiring - others or yourself. Truth is a strong inspiring force.
Line 2. Another explanation might be: to be without diminishing or augmenting is to be without wishes, without ego.
Line 3. Three can mean 3, or it can mean "several", anything between 3 and 7 or so. Same like 10 can be "quite a number".
Line 5 (and 42.2). Ten pairs: it was common practice to divine the same charge in five pairs. "Will it .. will it not.." So there are 10 cracks made on one tortoise shell.
Line 5. 'Someone's increase' or: someone increases it.
Line 6. 'Acquiring servants, no home' can also be: 'acquire unmarried servants'